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Hertling-Schaal E, Perrotin F, de Poncheville L, Lansac J, Body G.Hertling-Schaal E, et al. Among authors: perrotin f.Gynecol Obstet Fertil. 2001 Jun;29(6):440-6. doi: 10.1016/s1297-9589(01)00158-8.Gynecol Obstet Fertil. 2001.PMID: 11462960Review.French.