Colonic Polyps

• Ospedale di San Severo — San Severo, Out of USA Or Canada, Italy
• Ospedale di Taranto — Taranto, Out of USA Or Canada, Italy
• Ospedale di Brindisi — Brindisi, Italy
• Ospedali Riuniti Foggia — Foggia, Italy

• Asan Medical Center — Seoul, South Korea

• California Pacific Medical Center — San Francisco, California, United States

• Changi General Hospital — Singapore

• Changhai Hospital, Second Military Medical University — Shanghai, China

• Department of Gastroenterology, Haishu No.2 Hospital, Ningbo, China — Ningbo, Zhejiang, China
• Department of Gastroenterology, Ninghai No.2 Hospital, Ningbo, China — Ningbo, Zhejiang, China
• Ningbo first hospital — Ningbo, Zhejiang, China

• The University of Hong Kong, Queen Mary Hospital — Hong Kong

Not specified

• Gastroenterology Unit, Valduce Hospital — Como, Italy

• Winthrop-NYU Langone — Mineola, New York, United States