aDepartment of Gastroenterology, Affiliated Drum Tower Hospital of Nanjing University Medical School

bSchool of Medicine, Southeast University Medical School, Nanjing Drum Tower Hospital

cDepartment of Radiology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China

Received 15 October 2022 Accepted 29 December 2022.

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Correspondence to Feng Zhang, MD, Department of Gastroenterology, Affiliated Drum Tower Hospital of Nanjing University Medical School, 321#, Zhongshan Road, Nanjing 210008, Jiangsu, China, Tel: +86 025 83106666, +86 13951872835; fax: +86 025 83304616; e-mail: [email protected]