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A FOUR-YEAR COMPARISON BETWEEN THE UTILIZATION AND USE-EFFECTIVENESS OF SEQUENTIAL AND COMBINED ORAL CONTRACEPTIVES
FELDMAN, JOSEPH G., LIPPES, JACKVolume:
21
Journal:
Obstetrical & Gynecological Survey
DOI:
10.1097/00006254-196610000-00002
Date:
October, 1966
File:
PDF, 142 KB
1966