- Correspondence to Dr Andreas Kirschniak, Working Group for Experimental Minimally Invasive Surgery and Training, Clinic for General, Visceral and Transplant Surgery, Tübingen University Hospital, Waldhörnlestrasse 22, Tübingen 72072, Germany;
- Received November 15, 2013
- Revised September 16, 2014
- Accepted November 10, 2014
- First published December 4, 2014.
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