1. Department of Surgery, University Medical Centre Groningen, University of Groningen , Groningen , The Netherlands
2. Department of Anaesthesiology, University Medical Centre Groningen, University of Groningen , Groningen , The Netherlands
3. Cochrane Netherlands, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University , Utrecht , The Netherlands
4. Department of Artificial Intelligence, Bernoulli Institute of Mathematics, Computer Science and Artificial Intelligence, University of Groningen , Groningen , The Netherlands