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Braems GA, Lang U, Künzel W.Braems GA, et al. Among authors: lang u.J Perinat Med. 1996;24(2):155-61. doi: 10.1515/jpme.1996.24.2.155.J Perinat Med. 1996.PMID: 8773941
Zygmunt M, Lang U, Katz N, Künzel W.Zygmunt M, et al. Among authors: lang u.Eur J Obstet Gynecol Reprod Biol. 1997 Apr;72(2):121-6. doi: 10.1016/s0301-2115(96)02671-1.Eur J Obstet Gynecol Reprod Biol. 1997.PMID: 9134388
Lang U, Baker RS, Braems G, Zygmunt M, Künzel W, Clark KE.Lang U, et al.Eur J Obstet Gynecol Reprod Biol. 2003 Sep 22;110 Suppl 1:S55-61. doi: 10.1016/s0301-2115(03)00173-8.Eur J Obstet Gynecol Reprod Biol. 2003.PMID: 12965091
Jensen A, Lang U, Künzel W.Jensen A, et al. Among authors: lang u.Adv Exp Med Biol. 1987;220:127-31. doi: 10.1007/978-1-4613-1927-6_24.Adv Exp Med Biol. 1987.PMID: 3673754No abstract available.
Lang U, Braems G, Künzel W.Lang U, et al.Gynecol Obstet Invest. 1990;30(2):124-6. doi: 10.1159/000293232.Gynecol Obstet Invest. 1990.PMID: 2245949No abstract available.
Lang U, Künzel W.Lang U, et al.Arch Gynecol Obstet. 1989;245(1-4):290-2. doi: 10.1007/BF02417283.Arch Gynecol Obstet. 1989.PMID: 2802715German.No abstract available.