1. Institut Mutualiste Monsouris, Paris, France
2. Department of Colorectal Surgery, Saifee Hospital, Mumbai, India
3. Division of Surgery, Department of Colorectal Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
4. Center of Medical Specialties & Investigation of Mexico, Mexico City General Hospital Surgery, Mexico City, Mexico
5. State Scientific Center of Coloproctology, Ministry of Health of Russian Federation, Moscow, Russia