Esophagitis, Peptic

• Chonnam National University Hospital — Gwangju, Donggu, Jebongro, South Korea
• Chonnam National University Hwasun Hospital — Gwangju, Hwasun-eup,Hwasun-gun, South Korea

• Research Site — Abiko-shi, Japan
• Research Site — Adachi-ku, Japan
• Research Site — Annaka-shi, Japan
• Research Site — Asahikawa-shi, Japan

• Seoul ST.MARY'S HOSPITAL — Seoul, South Korea

• Research Site — Aichi, Japan
• Research Site — Akita, Japan
• Research Site — Aomori, Japan
• Research Site — Chiba, Japan

• Hakata Clinic Medical Co. LTA — Fukuoka, Japan
• Research Site — Fukuoka, Japan

Not specified

Not specified

• Mayo Clinic — Rochester, Minnesota, United States

• Medical University — Graz, Austria

• Hammersmith Medicines Research — London, United Kingdom