Department of Gastroenterology, Fuyoukai Murakami Hospital, Aomori, Japan

Received 25 November 2022 Accepted 7 January 2023.

Correspondence to Yusaku Kajihara, MD, FACP, Department of Gastroenterology, Fuyoukai Murakami Hospital, 3-3-14 Hamada, Aomori 030-0843, Japan, Tel: +81 17 729 8888; fax: +81 17 729 8887; e-mail: [email protected]