Journal of International Reproductive Health/Family Planning
WU Jun-qing;LI Yu-yan;YE Jiang-feng;ZHANG Yu-feng;ZHAO Rui;ZHENG Xiao-ying;ZHAN Shao-kang;CHENG Jian-ping;YANG Ting-zhong
Journal of International Reproductive Health/Family Planning . 2011, (1): 45 -49 .