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Malik E, Buchweitz O, Müller-Steinhardt M, Kressin P, Meyhöfer-Malik A, Diedrich K.Malik E, et al.Surg Endosc. 2001 May;15(5):463-6. doi: 10.1007/s004640000348. Epub 2001 Mar 13.Surg Endosc. 2001.PMID: 11353962