3J-X. Xu,C. Connell,I-Cheng Chi. Immediate postpartum intrauterine device insertion — a report on the Chinese experience[J] 1992,Advances in Contraception(4):281~290
4I-Cheng Chi,G. Farr. Postpartum IUD contraception — a review of an international experience[J] 1989,Advances in Contraception(3):127~146
5R. A. Apelo,C. S. Waszak. Postpartum IUD insertions in Manila, Philippines[J] 1985,Advances in Contraception(4):319~328