3WHO. Strategy to accelerate progress towards the attainment of international development goals and targets related to reproductive health [J]. Reprod Health Matters, 2005, 13 (25): 11-18.
4Kass GV. An Exploratory Technique for Investigating Large Quantities of Categorical Data [ J]. Applied Statistics, 1980, 29 (2): 119-127.
5Biggs D, De Ville B, Suen E. A method of choosing muhiway partitions for classification and decision trees [ J ]. Applied Statistics, 1991, 18 (1): 49-62.
6Goodyear - Smith F, Knowles A. Choosing medical or surgical terminations of pregnancy in the first trimester: what is the difference [ J]. Aust N Z J Obstet Gynaecol, 2009, 49 (2) :211 -215.
7Saha R, Shrestha NS, Koirala B, et al. Patients choice for method of early abortion among comprehensive abortion care (CAC) clients at Kathmandu Medical College Teaching Hospital (KMCTH) [J]. Kathmandu Univ Med J (KUMJ), 2007, 5 (3) : 324 - 329.
8Andrews FM, Morgan JN, Messenger RC. Comments on reviews by Jagdish N. Sheth of MNA and Thaid [ J]. Journal of Marketing Research, 1974, II (4): 473-476.
