A prospective multicentre trial of the ovulation method of natural family planning. Ii. The effectiveness phase*

World Health Organization,

Fertility and Sterility 36(5): 591-598

1981


ISSN/ISBN: 0015-0282
DOI: 10.1016/s0015-0282(16)45856-5
Document Number: 465616

Document emailed within 0-6 h
Secure & encrypted payments