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PII: S0010-7824(09)00395-3
doi:10.1016/j.contraception.2009.08.013
© 2009 Elsevier Inc. All rights reserved.
PII: S0010-7824(09)00395-3
doi:10.1016/j.contraception.2009.08.013
© 2009 Elsevier Inc. All rights reserved.