- Correspondence to Dr D K Bartsch, Department of Visceral, Thoracic and Vascular Surgery, Philipps University Marburg, Baldingerstrasse, Marburg D-35043, Germany;
- Received November 14, 2015
- Revised April 29, 2016
- Accepted May 1, 2016
- First published May 24, 2016.
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