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Studies in Family Planning|April 27, 2002
Future trends in contraceptive prevalence and method mix in the developing worldJohn Bongaarts, Elof JohanssonHuman Reproduction (Oxford, England)|June 4, 2002
Pharmacokinetic study of different dosing regimens of levonorgestrel for emergency contraception in healthy womenElof Johansson, Vivian Brache, Frank Alvarez, et al.Pageof 1