Lancet.

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Contraception.

Chen M, Lindley A, Kimport K, Dehlendorf C

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Eur J Contracept Reprod Health Care.

Heller R, Johnstone A, Cameron ST

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Contraception.

Worly BL, Gur TL, Schaffir J

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Matern Child Health J.

Guzzo KB, Hayford SR

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Am J Obstet Gynecol.

Simmons KB, Haddad LB, Nanda K, Curtis KM

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Contraception.

Chen MJ, Hsia JK, Creinin MD

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World J Emerg Med.

Lee SK, Carrillo EH, Rosenthal A, Sanchez R, Kiffin C, Davare DL

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