Use-Effectiveness of Oral Contraceptives by Demographic Characteristics**This investigation was supported by grants from the Population Council and Public Health Service Grant HS00011 from the National Center for Health Services Research and Development. We gratefully acknowledge their assistance. ††For reprints write to: Planned Parenthood Center, 210 Franklin Street, Buffalo, New York 14202.
1971 ◽
Vol 22
(10)
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pp. 677-682
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1996 ◽
Vol 65
(5)
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pp. 925-930
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1960 ◽
Vol 34
(2)
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pp. 89-94
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Keyword(s):
1994 ◽
Vol 62
(1)
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pp. 89-95
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1975 ◽
Vol 26
(5)
◽
pp. 460-468
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1975 ◽
Vol 26
(6)
◽
pp. 554-559
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1975 ◽
Vol 26
(10)
◽
pp. 951-969
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1977 ◽
Vol 28
(8)
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pp. 809-813
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