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1990 data, Barry A. Kosmin and Seymour P. Lachman, "One Nation Under God: Rel...

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Christian church adherents-B. Quinn, H. Anderson, M. Bradley, P. Goetting, an...

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L.B. Finer and S.K. Henshaw, "Estimates of U.S. abortion incidence in 2001-20...

Wendy Max and Dorothy Rice, Institute for Health and Aging, University of Cal...

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National Center for Health Statistics Health, United States, 2005. __referenc...