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Rotten D, Levaillant JM, Constancis E, Collet Billon A, Le Guerinel Y, Rua P.Rotten D, et al. Among authors: levaillant jm.Ultrasound Obstet Gynecol. 1991 Nov 1;1(6):384-90. doi: 10.1046/j.1469-0705.1991.01060384.x.Ultrasound Obstet Gynecol. 1991.PMID: 12797019Free article.