birth control

n.

节育；避孕；计划生育；

Bone density in premenopausal women: effects of age, dietary intake, physical activity, smoking, and birth-control pills.
The safety and effectiveness of a new hysteroscopic method for permanent birth control: results of the first Essure pbc clinical stu...
Parent-adolescent communication about sex and birth control: a conceptual framework.
Method of birth control and hormone regulation
PHASE I CLINICAL TRIAL OF A WORLD HEALTH ORGANISATION BIRTH CONTROL VACCINE
Adolescent perceptions of maternal approval of birth control and sexual risk behavior.
Women's satisfaction with birth control: a population survey of physical and psychological effects of oral contraceptives, intrauter...
Birth Control in China, 1949-2000: Population Policy and Demographic Development by Thomas Scharping
Associations of parity, breast-feeding, and birth control pills with lumbar spine and femoral neck bone densities.
Inhibition of ovulation in women by chronic treatment with a stimulatory lrh analogue — A new approach to birth control?