1Department of Gastroenterology, Hakodate Municipal Hospital, Hakodate, Japan
2Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
3Department of Pediatric Emergency and Critical Care Medicine, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
Correspondence: Shuichi Miyamoto, MD, PhD, Department of Gastroenterology, Hakodate Municipal Hospital, 10-Ban 1-Gou 1-Chome Minato-chou Hakodate, Hokkaido 041-8680, Japan (firstname.lastname@example.org).
Received December 03, 2018
Accepted February 28, 2019
Online date: June 12, 2019
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