3Davis A R,Westhoff C L. Primary dysmenorrhea in adolescent girls and treatment with oral contraceptives[J].Journal of Pediatric and Adolescent Gynecology,2001,(01):3-8.
4Hillen T I J,Grbavac S L,Johnston P J. Primary dysmenorrhea in young western australian women:Prevalence,impact,and knowledge of treatment[J].Journal of Adolescent Health,1999,(01):40-45.
9Harlow S, Park M. A longitudinal study of risk factors for the occurrence, duration and severity of menstrual cramps in a cohort of college women [J]. Br J Obstet Gynaecol , 1996,103: 1134~1142.
10Hornsby PP, Wilcox AJ, Weinberg CR. Cigarette smoking and disturbance of menstrual function [J]. Epidemiology, 1998,9: 193~198.