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Ngan HY, Cheng GT, Yeung WS, Wong LC, Ma HK.Ngan HY, et al. Among authors: yeung ws.Gynecol Oncol. 1994 Jan;52(1):63-8. doi: 10.1006/gyno.1994.1012.Gynecol Oncol. 1994.PMID: 8307503
Ngan HY, Yeung WS, Cheng GT, Wong LC, de Madeiros SF, Norman RJ, Ma HK.Ngan HY, et al. Among authors: yeung ws.Int J Gynecol Cancer. 1995 Jan;5(1):15-19. doi: 10.1046/j.1525-1438.1995.05010015.x.Int J Gynecol Cancer. 1995.PMID: 11578447
Yao YQ, Chiu CN, Ip SM, Ho PC, Yeung WS.Yao YQ, et al. Among authors: yeung ws.Hum Reprod. 1998 Sep;13(9):2541-7. doi: 10.1093/humrep/13.9.2541.Hum Reprod. 1998.PMID: 9806280