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Lange A, Funch-Jensen P, Thommesen P, Schiøtz PO.Lange A, et al.Neurogastroenterol Motil. 1997 Jun;9(2):55-62. doi: 10.1046/j.1365-2982.1997.d01-20.x.Neurogastroenterol Motil. 1997.PMID: 9198080Clinical Trial.