4Rupley DM, Morhe ES, Moyer CA, et al. Maternity care provider knowledge, attitudes, and practices regarding provision of postpartum intrauterine contraceptive devices at a tertiary center in Ghana[J]. Int J Gynaecol Obstet,2015,128(2) :137 - 140.
5Rizwan S, Rath RS, Vivek G, et al. KAP Study on Sexually Transmit- ted Infections/Reproductive Tract Infections (STIs/RTIs) among mar- ried women in rural Haryana[J]. Indian Dermatol Online J,2015,6 (1) :9 -12.
6Ortiz-Gonzalez KM, Benabe E, Rivera-Rosa E, et al. Knowledge and choiees of postpartum contraception among pregnant teens [J]. P R Health Sci J ,2014,33 (3) : 117 - 121.
8Ouyang YQ,Zhang Q. A study on personal mode of delivery amnng Chinese obstetrician-gynecologists,midwives and nurses[J]. Arch Gynecol Obstet, 2013,287 ( 1 ) : 37-41.
9Liu NH,Mazzoni A,Zamberlin N,et al. Preferences for mode of delivery in nulliparous Argentinean women:a qualitative study[J]. Reprod Health ,2013,10( 1 ) :2.
10Ajzen I.The theory of planned behavior[J].Organizational behav- ior and human decision processes, 1991,50(2) : 179-211.