1. Medical Simulation Training Center at Research Institute of Medical University of Plovdiv, Plovdiv, Bulgaria
2. 1st Department of Propaedeutic Surgery, Hippokration General Hospital of Athens, Athens Medical School, National and Kapodistrian University of Athens, Athens, Greece
3. Medical Physics Laboratory Simulation Center, Athens Medical School, National and Kapodistrian University of Athens, Athens, Greece
4. Central Clinical Laboratory, University Hospital St. George, Plovdiv, Bulgaria
5. Department of Clinical Laboratory, Medical University of Plovdiv, Plovdiv, Bulgaria
6. Division of Surgery, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
7. Centre for Clinical Research Sörmland, Uppsala University, Uppsala, Sweden
8. Department of Surgical and Perioperative Sciences, Surgery, Umeå University, Umeå, Sweden