L. Cheng

Emergency contraceptive use among 5677 women seeking abortion in Shanghai, China.

O. Stephansson, K. Gemzell‐Danielsson, Chou Meng, 2009, Human reproduction.

Medical methods for cervical ripening before the removal of intrauterine devices in postmenopausal women: a systematic review.

Y. Teng, L.-H. Huang, L. Cheng, 2013, European journal of obstetrics, gynecology, and reproductive biology.

Emergency contraceptive use among 5677 women seeking abortion in Shanghai, China.

O. Stephansson, Chou Meng, J. Kang, 2009, Human reproduction.