Porth Ymchwil

Professor Rhiannon Tudor Edwards

Athro

Aelodaeth

Dolenni cyswllt

ORCID: 0000-0003-4748-5730

Contact info

Cyfarwyddwr sefydlu ymchwil economeg iechyd ym Mhrifysgol Bangor. Cyd-gyfarwyddwr y Ganolfan Economeg a Gwerthuso Meddyginiaethau (CHEME) ym Mhrifysgol Bangor.

Mewn dadansoddiad byd-eang o lyfryddiaeth mewn economeg iechyd (1975-2022), rhestrwyd Rhiannon ymhlith yr awduron pwysicaf ym maes economeg iechyd. Roedd hi ymhlith y pum awdur mwyaf cydweithredol, gyda Phrifysgol Bangor yn un o’r 10 sefydliad mwyaf cydweithredol ym maes economeg iechyd. Gweler: Barbu, L. Global trends in the scientific research of the health economics: a bibliometric analysis from 1975 to 2022. Health Econ Rev 13, 31 (2023).

Ffôn: +44 (0) 1248 383 712

E-bost: r.t.edwards@bangor.ac.uk

Cyfeiriad: Ystafell 103, Ardudwy, Safle Normal, Prifysgol Bangor, Bangor, Gwynedd LL57 2PZ

X (Trydar): @ProfRTEdwards

 

1 - 50 o blith 309Maint y tudalen: 50
Trefnu yn ôl: Teitl
  1. Cyhoeddwyd

    'Keep fit' exercise interventions to improve health, fitness and well-being of children and young people who use wheelchairs: mixed-method systematic review protocol.

    O'Brien, T. D., Noyes, J., Spencer, L. H., Kubis, H., Hastings, R. P., Edwards, R. T., Bray, N. & Whitaker, R., 18 Mai 2014, Yn: Journal of Advanced Nursing. 70, 12, t. 2942-2951

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  2. Cyhoeddwyd

    'Putting Life in Years' (PLINY) telephone friendship groups research study: pilot randomised controlled trial

    Mountain, G. A., Hind, D., Gossage-Worrall, R., Walters, S. J., Duncan, R., Newbould, L., Rex, S., Jones, C. L., Bowling, A., Cattan, M., Cairns, A., Cooper, C., Edwards, R. T. & Goyder, E. C., 24 Ebr 2014, Yn: Trials. 15, 141

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  3. Cyhoeddwyd

    A Scoping Review of How Income Affects Accessing Local Green Space to Engage in Outdoor Physical Activity to Improve Well-Being: Implications for Post-COVID-19

    Spencer, L., Lynch, M., Lawrence, C. & Edwards, R. T., 12 Rhag 2020, Yn: International Journal of Environmental Research and Public Health. 17, 24, 13 t., 9313.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  4. Cyhoeddwyd

    A Social Return on Investment Evaluation of the Pilot Social Prescribing EmotionMind Dynamic Coaching Programme to Improve Mental Wellbeing and Self-Confidence

    Makanjuola, A., Lynch, M., Hartfiel, N., Cuthbert, A., Wheeler, H. & Edwards, R. T., 26 Awst 2022, Yn: International Journal of Environmental Research and Public Health. 19, 17, 10658.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  5. Cyhoeddwyd

    A Systematic Review Exploring the Economic Valuation of Accessing and Using Green and Blue Spaces to Improve Public Health

    Lynch, M., Spencer, L. & Edwards, R. T., 10 Meh 2020, Yn: International Journal of Environmental Research and Public Health. 17, 11, 4142.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  6. Cyhoeddwyd

    A clinical librarian in a hospital critical care unit may generate a positive return on investment

    Hartfiel, N., Sadera, G., Treadway, V., Lawrence, C. & Edwards, R. T., Meh 2021, Yn: Health Information and Libraries Journal. 38, 2, t. 97-112 16 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  7. Cyhoeddwyd

    A cluster randomised controlled trial to investigate the effectiveness and cost effectiveness of the 'Girls Active' intervention: a study protocol

    Edwardson, C. L., Harrington, D. M., Yates, T., Bodicoat, D. H., Khunti, K., Gorely, T., Sherar, L. B., Edwards, R. T., Wright, C., Harrington, K. & Davies, M. J., 4 Meh 2015, Yn: BMC Public Health. 15, t. 526

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  8. Cyhoeddwyd
  9. Cyhoeddwyd
  10. Cyhoeddwyd

    A development study and randomised feasibility trial of a tailored intervention to improve activity and reduce falls in older adults with mild cognitive impairment and mild dementia

    Harwood, R., van der Wardt, V., Goldberg, S., Kearney, F., Logan, P., Hood-Moore, V., Booth, V., Hancox, J., Masud, T., Hoare, Z., Brand, A., Edwards, R., Jones, C., das Nair, R., Pollock, K., Godfrey, M., Gladman, J., Vedhara, K., Smith, H. & Orrell, M., 17 Chwef 2018, Yn: Pilot and Feasibility Studies. 4, 49, 12 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  11. Cyhoeddwyd

    A feasibility study examining the effect on lung cancer diagnosis of offering a chest X-ray to higher-risk patients with chest symptoms: protocol for a randomized controlled trial

    Hurt, C. N., Roberts, K., Rogers, T. K., Griffiths, G. O., Hood, K., Prout, H., Nelson, A., Fitzgibbon, J., Barham, A., Thomas-Jones, E., Edwards, R. T., Yeo, S. T., Hamilton, W., Tod, A. & Neal, R. D., 26 Tach 2013, Yn: Trials. 14, t. 405

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  12. Cyhoeddwyd

    A mixed method, phase 2 clinical evaluation of a novel device to treat postpartum haemorrhage

    Weeks, A., Cunningham, C., Taylor, W., Rosala-Hallas, A., Watt, P., Bryning, L., Ezeofor, V., Cregan, L., Hayden, E., Lambert, D., Bedwell, C., Lane, S., Fisher, T., Edwards, R. T. & Lavender, T., Ebr 2023, Yn: European Journal of Obstetrics & Gynecology and Reproductive Biology. 283, t. 142-148

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  13. Cyhoeddwyd

    A national Programme Budgeting and Marginal Analysis (PBMA) of health improvement spending across Wales: disinvestment and reinvestment across the life course

    Edwards, R. T., Charles, J. M., Thomas, S., Bishop, J., Cohen, D., Groves, S., Humphreys, C., Howson, H. & Bradley, P., 12 Awst 2014, Yn: BMC Public Health. 14, 1, t. 837

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  14. Cyhoeddwyd

    A new primary dental care service compared with standard care for child and family to reduce the re-occurrence of childhood dental caries (Dental RECUR): study protocol for a randomised controlled trial

    Pine, C., Adair, P., Burnside, G., Robinson, L., Edwards, R. T., Albadri, S., Curnow, M., Ghahreman, M., Henderson, M., Malies, C., Wong, F., Muirhead, V., Weston-Price, S. & Whitehead, H., 4 Tach 2015, Yn: Trials. 16

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  15. Cyhoeddwyd

    A note on the effect of farmer mental health on adoption: The case of agri-environment schemes.

    Hounsome, B., Edwards, R. T. & Edwards-Jones, G., 1 Rhag 2006, Yn: Agricultural Systems. 91, 3, t. 229-241

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  16. Cyhoeddwyd

    A phase 2 clinical trial of the PPH Butterfly, a new device to ‘turn off the tap’ of Post-Partum Hemorrhage.

    Weeks, A., Cunningham, C., Taylor, W., Rosala-Hallas, A., Watt, P., Bryning, L., Ezeofor, V., Cregan, L., Hayden, E., Lambert, D., Bedwell, C., Lane, S., Fisher, T., Edwards, R. T. & Lavender, T., 4 Mai 2021, Authorea.

    Allbwn ymchwil: Papur gweithio › Papur Gwaith

  17. Cyhoeddwyd
  18. Cyhoeddwyd

    A pilot randomised controlled trial of personalised care after treatment for prostate cancer (TOPCAT-P): nurse-led holistic-needs assessment and individualised psychoeducational intervention: study protocol

    Evans, R. J., Hoare, Z. S., Wilkinson, C. E., Stanciu, M. A., Makin, M., Watson, E., Bulger, J., Evans, R., Hiscock, J., Hoare, Z., Edwards, R. T., Neal, R. D. & Wilkinson, C., 25 Meh 2015, Yn: BMJ Open. 5, 6

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  19. Cyhoeddwyd

    A pilot randomized controlled trial of a self-management group intervention for people with early-stage dementia (The SMART study)

    Quinn, C., Toms, G. R., Jones, C. L., Brand, A., Edwards, R. T., Sanders, F. & Clare, L., 1 Mai 2016, Yn: International Psychogeriatrics. 28, 5, t. 787-800

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  20. Cyhoeddwyd

    A pragmatic randomised controlled trial of the Welsh National Exercise Referral Scheme: protocol for trial and integrated economic and process evaluation

    Murphy, S., Raisanen, L., Moore, G., Edwards, R. T., Linck, P., Williams, N., Din, N., Hale, J., Roberts, C., McNaish, E. & Moore, L., 18 Meh 2010, Yn: BMC Public Health. 10, 352, t. 352

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  21. Cyhoeddwyd

    A profile of low vision services in England: the Low Vision Service Model Evaluation (LOVSME) project

    Linck, P. G., Dickinson, C., Linck, P., Edwards, R. T., Binns, A., Bunce, C., Harper, R., Jackson, J., Lindsay, J., Suttie, A., Wolffsohn, J., Woodhouse, M. & Margrain, T. A., 1 Gorff 2011, Yn: Eye. 25, 7, t. 829–831

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  22. Cyhoeddwyd

    A randomised controlled trial and cost-consequence analysis of traditional and digital foot orthoses supply chains in a National Health Service setting: application to feet at risk of diabetic plantar ulceration

    Parker, J. D., Nuttall, G. H., Bray, N., Hugill, T., Martinez-Santos, A., Edwards, R. T. & Nester, C., 8 Ion 2019, Yn: Journal of Foot and Ankle Research. 12, 2, t. 2

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  23. Cyhoeddwyd

    A randomised controlled trial of an exercise intervention promoting activity, independence and stability in older adults with mild cognitive impairment and early dementia (PrAISED) – A Protocol

    Bajwa, R., Goldberg, S., van der Wardt, V., Burgon, C., di Lorito, C., Godfrey, M., Dunlop, M. R., Logan, P., Masud, T., Gladman, J., Smith, H., Hood-Moore, V., Booth, V., das Nair, R., Pollock, K., Vedhara, K., Edwards, R. T., Jones, C., Hoare, Z., Brand, A. & Harwood, R., 30 Rhag 2019, Yn: Trials. 20, 1, 11 t., 815.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  24. Cyhoeddwyd

    A randomised controlled trial to evaluate the impact of a Human Rights Based Approach to dementia care in inpatient ward and care home settings

    Kinderman, P., Butchard, S., Bruen, A. J., Wall, A., Goulden, N., Hoare, Z., Jones, C. & Edwards, R., 21 Maw 2018, Yn: Health Services and Delivery Research (HS&DR). 6.13

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  25. Cyhoeddwyd

    A rapid review exploring the effectiveness of artificial intelligence for cancer diagnosis

    Wale, A., Shaw, H., Ayres, T., Okolie, C., Edwards, R. T., Davies, J., Lewis, R., Cooper, A. & Edwards, A., 9 Tach 2023, MedRxiv.

    Allbwn ymchwil: Papur gweithio › Rhagargraffiad

  26. Cyhoeddwyd

    A school-based intervention ('Girls Active') to increase physical activity levels among 11- to 14-year-old girls: cluster RCT

    Harrington, D., Davies, M., Bodicoat, D., Charles, J., Chudasama, Y., Gorely, T., Khunti, K., Rowlands, A., Sherar, L., Edwards, R., Yates, T. & Edwardson, C., 28 Chwef 2019, Yn: Public Health Research. 7, 5

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  27. Cyhoeddwyd

    A study to explore the feasibility of using a social return on investment approach to evaluate short breaks

    Toms, G., Stringer, C., Prendergast, L., Seddon, D., Anthony, B. & Edwards, R. T., 24 Awst 2023, Yn: Health and Social Care in the Community. 2023, 11 t., 4699751.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  28. Cyhoeddwyd

    A systematic review of economic evaluation studies of green and blue spaces in improving population health

    Lynch, M., Spencer, L. & Edwards, R., 14 Tach 2018.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid

  29. Cyhoeddwyd
  30. Cyhoeddwyd

    A systematic review of the cost-effectiveness of interventions for supporting informal caregivers of people with dementia residing in the community

    Jones, C. L., Edwards, R. T. & Hounsome, B., 1 Ion 2012, Yn: International Psychogeriatrics. 24, 1, t. 6-18

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  31. Cyhoeddwyd

    A systematic review of the economic and modelling techniques to value the health benefits of engaging in physical activity in green and blue spaces

    Lynch, M., Spencer, L. & Edwards, R., 11 Gorff 2018, NIHR PROSPERO (International Prospective Register of Systematic Reviews).

    Allbwn ymchwil: Llyfr/Adroddiad › Adoddiad Arall › adolygiad gan gymheiriaid

  32. Cyhoeddwyd

    Activity Increase Despite Arthritis (AÏDA): design of a Phase II randomised controlled trial evaluating an active management booklet for hip and knee osteoarthritis [ISRCTN24554946]

    Williams, N., Amoakwa, E., Burton, K., Hendry, M., Belcher, J., Lewis, R., Hood, K., Jones, J. G., Bennett, P., Edwards, R. T., Neal, R., Andrew, G. & Wilkinson, C., 4 Medi 2009, Yn: BMC Family Practice. 10, 62, t. 1-9 62.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  33. Cyhoeddwyd

    Activity Increase Despite Arthritis (AÏDA): phase II randomised controlled trial of an active management booklet for hip and knee osteoarthritis in primary care

    Williams, N. H., Amoakwa, E., Belcher, J., Edwards, R. T., Hassani, H., Hendry, M., Burton, K., Lewis, R., Hood, K., Jones, J., Bennett, P., Linck, P. G., Neal, R. D. & Wilkinson, C. E., 1 Awst 2011, Yn: British Journal of General Practice. 61, 589, t. e452-e458

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  34. Cyhoeddwyd

    Additional therapy for young children with spastic cerebral palsy: a randomised controlled trial.

    Weindling, A. M., Cunningham, C. C., Glenn, S. M., Edwards, R. T. & Reeves, D. J., 1 Mai 2007, Yn: Health Technology Assessment. 11, 16, t. 90

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  35. Cyhoeddwyd

    Adjunctive intraocular and peri-ocular steroid (triamcinolone acetonide) versus standard treatment in eyes undergoing vitreoretinal surgery for open globe trauma (ASCOT): Study protocol for a phase III, multi-centre, double-masked randomised controlled trial

    Banerjee, P. J., Cornelius, V. R., Phillips, R., Lo, J. W., C, B., Kelly, J., Murphy, C., Edwards, R., Robertson, E. L. & Charteris, D. G., 22 Gorff 2016, Yn: Trials. 17, 1, 339.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  36. Cyhoeddwyd

    An Economic Evaluation Supported by Qualitative Data About the Patient Concerns Inventory (PCI) versus Standard Treatment Pathway in the Management of Patients with Head and Neck Cancer

    Ezeofor, V., Spencer, L., Rogers, S. N., Kanatas, A., Lowe, D., Semple, C. J., Hanna, J. R., Yeo, S. T. & Edwards, R. T., Mai 2022, Yn: PharmacoEconomics - Open. 6, 3, t. 389-403 15 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  37. Cyhoeddwyd

    An economic evaluation of the Incredible Years Child Parenting Programme.

    Kelleher, A., Edwards, R. T., Bywater, T. & Hutchings, J., 6 Gorff 2006.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

  38. Cyhoeddwyd

    An economic perspective of the Salisbury Waiting List Points Scheme

    Edwards, R., 1994, Setting priorities in health care. Malek, M. (gol.). Wiley-Blackwell

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

  39. Cyhoeddwyd

    An evaluation of the effectiveness and cost effectiveness of the National Exercise Referral Scheme in Wales, UK: a randomised controlled trial of a public health policy initiative

    Murphy, S. M., Edwards, R. T., Williams, N., Raisanen, L., Moore, G., Linck, P., Hounsome, N., Din, N. U. & Moore, L., Awst 2012, Yn: Journal of Epidemiology and Community Health. 66, 8, t. 745-753 9 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  40. Cyhoeddwyd

    Analysis of the Potential Economic Impact of Guidance of improving Outcomes for Children and Young People with Cancer

    Linck, P., Tunnage, B., Hughes, D. A. & Edwards, R. T., 1 Ion 2005, 2005 gol. Unknown.

    Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn

  41. Cyhoeddwyd

    Analysis of the Potential Economic Impact of Guidance of improving Outcomes for Patients with Sarcoma

    Linck, P., Hughes, D. A. & Edwards, R. T., 1 Ion 2006, 2006 gol. Unknown.

    Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn

  42. Cyhoeddwyd

    Analysis of the Potential Economic Impact of Guidance of improving Outcomes for Patients with Skin Cancer

    Linck, P., Hughes, D. A. & Edwards, R. T., 1 Ion 2006, 2006 gol. Unknown.

    Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn

  43. Cyhoeddwyd

    Antipsychotic and Benzodiazepine prescribing prevalence and costs in people with dementia and challenging behaviours, living in care homes

    Bray, N., Hilton, A., Hounsome, B., Zou, L., Whitaker, C., Moniz-Cook, E., Hart, C., Woods, R. & Edwards, R. T., 24 Maw 2013.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

  44. Cyhoeddwyd

    Applied Health Economics for Public Health Practice and Research

    Edwards, R. (gol.) & McIntosh, E. (gol.), 19 Maw 2019, Oxford University Press. 400 t. (Handbooks in Health Economic Evaluation; Cyfrol 5)

    Allbwn ymchwil: Llyfr/Adroddiad › Llyfr › adolygiad gan gymheiriaid

  45. Cyhoeddwyd

    Barriers and enablers to care-leavers engagement with multi-agency support: A scoping review

    Prendergast, L., Davies, C. T., Seddon, D., Hartfiel, N. & Edwards, R. T., Ebr 2024, Yn: Children and Youth Services Review. 159, 107501.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  46. Cyhoeddwyd

    Based Applied Psychophysiology: Yoga for Occupational Stress and Health

    Hartfiel, E. & Edwards, R., Mai 2017, Based Perspectives on the Psychophysiology of Yoga . Telles, S. & Singh, N. (gol.). Medical Information Science Reference, t. 175 (Advances in Medical Diagnosis, Treatment, and Care).

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

  47. Cyhoeddwyd

    Better Living with Non‑memory‑led Dementia: protocol for a feasibility randomised controlled trial of a web‑based caregiver educational programme

    Suárez‑González, A., John, A., Brotherhood, E., Camic, P., McKee‐Jackson, R., Melville, M., Sullivan, M. P., Edwards, R. T., Windle, G., Crutch, S., Hoare, Z. & Stott, J., 11 Hyd 2023, Yn: Pilot and Feasibility Studies. 9, 1, 13 t., 172.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  48. Cyhoeddwyd

    Blind Faith and Choice.

    Edwards, R. T., Verghese, A. (gol.), Mullan, F. (gol.), Ficklen, E. (gol.) & Rubin, K. (gol.), 1 Ion 2007, Narrative Matters: The Power of the Personal Essay in Health Policy. 2007 gol. Johns Hopkins University Press, t. 97-104

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

  49. Cyhoeddwyd

    Byw yn dda yn hirach: Y ddadl economaidd dros fuddsoddi yn iechyd a llesiant pobl hŷn yng Nghymru

    Edwards, R., Spencer, L., Bryning, L. & Anthony, B., 30 Gorff 2018, 68 t.

    Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn › adolygiad gan gymheiriaid

  50. Cyhoeddwyd

    Can a mindfulness-informed intervention reduce aggressive behaviour in people with intellectual disabilities? Protocol for a feasibility study

    Griffith, G., Jones, R., Hastings, R. P., Crane, R., Roberts, J., Williams, J., Bryning, L., Hoare, Z. & Edwards, R., 20 Medi 2016, Yn: Pilot and Feasibility Studies. 2016, 2, t. 58 10 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

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