Departments of Abdominal and General Surgery (Drs Horvat, Hladnik, and Jagrič and Mr Kolarič) and Plastic and Reconstructive Surgery (Dr Bizjak), University Medical Centre Maribor, Maribor, Slovenia.

Correspondence: Matjaž Horvat, MD, PhD, Department of Abdominal and General Surgery, University Medical Centre Maribor, Ljubljanska ulica 5, 2000 Maribor, Slovenia ([email protected]).

The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article.