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Wehner S, Straesser S, Vilz TO, Pantelis D, Sielecki T, de la Cruz VF, Hirner A, Kalff JC.Wehner S, et al. Among authors: kalff jc.Gastroenterology. 2009 Feb;136(2):619-29. doi: 10.1053/j.gastro.2008.10.017. Epub 2008 Oct 9.Gastroenterology. 2009.PMID: 19014943
Pantelis D, Wolff M, Overhaus M, Hirner A, Kalff JC.Pantelis D, et al. Among authors: kalff jc.Urologe A. 2006 Sep;45(9):W1193-200; quiz 1200-1201. doi: 10.1007/s00120-006-1049-z.Urologe A. 2006.PMID: 16645854German.
Overhaus M, Schaudienst CB, Nohl Y, Vilz TO, Hirner A, Standop J, Türler A, Kalff JC, Schäfer N.Overhaus M, et al. Among authors: kalff jc.Chirurg. 2011 Sep;82(9):813-9. doi: 10.1007/s00104-011-2076-x.Chirurg. 2011.PMID: 21424287German.