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Petru E, Sevin BU, Averette HE, Koechli OR, Perras JP, Hilsenbeck S.Petru E, et al. Among authors: sevin bu.Gynecol Oncol. 1990 Aug;38(2):181-6. doi: 10.1016/0090-8258(90)90037-l.Gynecol Oncol. 1990.PMID: 2387533Free article.