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The Walnut Creek Contraceptive Drug Study: A comparison of disease occurrence leading [to] hospitalization or death in users and nonuse[rs] of oral contraceptives

Savitri Ramcharan

出版	U.S. Department of Health, Education, and Welfare, Public Health Service, National Institutes of Health, National Institute of Child Health and Human Development, Center for Population Research, 1974
URL	http://books.google.com.hk/books?id=QJp8egVSYs0C&hl=&source=gbs_api