NORCCAP
Norwegian Institute of Public Health
Norwegian Institute of Public Health
Norwegian Institute of Public Health
Unidade Local de Saúde São João
Zagazig University
Institut National de la Santé Et de la Recherche Médicale, France
Institut National de la Santé Et de la Recherche Médicale, France
Azienda USL Reggio Emilia - IRCCS
Azienda USL Reggio Emilia - IRCCS
Linkoeping University
Ankara Etlik City Hospital
St. Borbala Hospital
Taipei Veterans General Hospital, Taiwan
Zagazig University
Sheba Medical Center
Osmania Medical College
State Scientific Centre of Coloproctology, Russian Federation
Dr. Ersin Arslan Education and Training Hospital
NHS Lothian
Tuen Mun Hospital
National Cancer Center, Japan
Luxembourg Institute of Health
National Cancer Center, Korea
Institut National de la Santé Et de la Recherche Médicale, France
East and North Hertfordshire NHS Trust
Turku University Hospital
Ministry of Health, Labour and Welfare, Japan
Tata Memorial Hospital