1. Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany;
2. Department Neurofarba, Section of Pharmaceutical Sciences, University of Florence, Florence, Italy;
3. Department of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany;
4. Department of Pediatric Surgery, Ûniversity Children’s Hospital Basel, Basel, Switzerland