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Leuschner U, Fischer H, Kurtz W, Güldütuna S, Hübner K, Hellstern A, Gatzen M, Leuschner M.Leuschner U, et al. Among authors: fischer h.Gastroenterology. 1989 Nov;97(5):1268-74. doi: 10.1016/0016-5085(89)91698-3.Gastroenterology. 1989.PMID: 2551765Clinical Trial.
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Gatzen M, Hellstern A, Fischer H, Schmidt K, Hübner K, Leuschner U.Gatzen M, et al. Among authors: fischer h.Verh Dtsch Ges Inn Med. 1990;96:629-30.Verh Dtsch Ges Inn Med. 1990.PMID: 2092497German.No abstract available.
Hellstern A, Leuschner M, Fischer H, Lazarovici D, Güldütuna S, Kurtz W, Leuschner U.Hellstern A, et al. Among authors: fischer h.Dtsch Med Wochenschr. 1988 Mar 31;113(13):506-10. doi: 10.1055/s-2008-1067672.Dtsch Med Wochenschr. 1988.PMID: 3349952German.