1. 2002
2. Cyhoeddwyd

   Don't forget syphilis. Syphilis outbreak is twice as big as reported

   Clark, P., Cook, P. A., Lighton, L., Syed, Q. & Bellis, M. A., 5 Hyd 2002, Yn: BMJ-British Medical Journal. 325, 7367, t. 775

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