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Affiliations
Takamasa Kobayashi
Division of Gastroenterology and Hepatology, Nagaoka Red Cross Hospital, Nagaoka, Niigata, Japan
Manabu Takeuchi
Division of Gastroenterology and Hepatology, Nagaoka Red Cross Hospital, Nagaoka, Niigata, Japan
Shuji Terai
Division of Gastroenterology and Hepatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan