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Franx A, van der Post JA, Elfering IM, Veerman DP, Merkus HM, Boer K, van Montfrans GA.Franx A, et al. Among authors: veerman dp.Br J Obstet Gynaecol. 1994 Jan;101(1):66-9. doi: 10.1111/j.1471-0528.1994.tb13013.x.Br J Obstet Gynaecol. 1994.PMID: 8297873No abstract available.