2Sannisto T, Kosunen E. Initiation of postpartum contraception: A survey among health centre physicians and nurses in Finland. Scandinavian Journal of Primary Health Care,2009,27:244-249.
3Ndola Prata, Amita Sreenivas, Farnaz Vahidnia, et al. Saving maternal lives in resource-poor settings: Facing reality. Health Policy,2009,89 : 131-148.
8Ewa Piejko. The postpartum visit, Why wait 6 weeks? Australian Family Physician. September,2006,35 ( 9 ) : 674-678.
9Kunwar S, Mohammad MA, Singh FS, et al. Pattern and determinants of breast feeding and contraceptivepractices among mothers within six months postpartum. Bio Science Trends ,2010, 4(4) :186-189.
4King JC. The risk of maternal nutritional depletion and poor outcomes increases in early or closely spaced pregnancies. J Nutr, 2003,133(5 Suppl 2) :S1732-S1736.
6Hu XY, Cheng LN, Hua XL, et al. Advanced provision of emergency contraception to postnatal women in China makes no difference in abortion rates: A randomized controlled trial. Contraception,2005,72 (2) ： 111-116.
