Anti-Aging Medicine, Hormones and Sexual Health, Menopause, Obstetrics& Gynecology, Reproductive Medicine
Founding Member, International Society for the Study of the Aging Male
International Society for Sexual Medicine and? Asia Pacific Society for the Study of the Aging Male
Member, American Society for Reproductive Medicine, 1990
Founding Member International Society for Study of Aging Male, 1998
Member, World Association for Sexual Health, 2000