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Lertxundi R, Ibarrondo O, Merki-Feld GS, Rey-Novoa M, Rowlands S, Mar J.Lertxundi R, et al.Eur J Contracept Reprod Health Care. 2016 Jun;21(3):198-200. doi: 10.3109/13625187.2015.1135897. Epub 2016 Mar 17.Eur J Contracept Reprod Health Care. 2016.PMID: 26986562