1. Female sterilizations now surpass vasectomies,1976
2. Trends in contraceptive practice: 1965–1973;Westoff;Fam Plann Perspect,1976
3. Commission on Professional and Hospital Activities (CPHA), Ann Arbor, Michigan, derived from the Hospital Record Study, a joint publication of CPHA and IMS America, Ltd, Ambler, Pa. Any analysis, interpretation, or conclusion based on these data is solely that of the researcher, and CPHA specifically disclaims responsibility for any such analysis, interpretation, or conclusion
4. Phillips J, Hulka J, Keith D, Hulka B, Keith L: Laparoscopic procedures: a national survey for 1975. J Reprod Med. In press
5. Phillips J, Hulka B, Hulka J, Keith D, Keith L: AAGL 1975 Membership Survey. J Reprod Med. In press