Affiliation: | 1. Departments of Surgery, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands;2. Clinical Chemistry, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands;3. Statistics and Education, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands Department of Obstetrics and Gynaecology, University Medical Centre Utrecht, Utrecht, the Netherlands;4. Department of Surgery, Erasmus MC, University Medical Centre Rotterdam, the Netherlands;5. Department of Surgery, Tawam Hospital, Al Ain, United Arab Emirates;6. Internal Medicine, Franciscus Gasthuis & Vlietland, Rotterdam, the Netherlands |