1. County Hospital Karlovac; Department of Surgery; Karlovac Croatia
2. "J. J. Strossmayer" University, School of Medicine, Osijek, Croatia; Division of Abdominal Surgery, Clinical Hospital Centre "Sestre milosrdnice"; Vinogradska cesta 29 Zagreb Croatia 10000
3. University Hospital Dubrava; Department of Surgery; Zagreb Croatia
4. University Hospital Dubrava; Orthopedic Surgery; Av. G. Suska 6 Zagreb Croatia 10000