[1] Chulalongkorn Univ, Gastrointestinal Endoscopy Excellence Ctr, Bangkok, Thailand
[2] Chulalongkorn Univ, Fac Med, Dept Med, Div Gastroenterol, Bangkok, Thailand
[3] King Chulalongkorn Mem Hosp, Thai Red Cross Soc, Bangkok, Thailand
[4] Chulalongkorn Univ, Dept Med, Pancreas Res Unit, Fac Med, Bangkok, Thailand
[5] Chulalongkorn Univ, Div Radiat & Oncol, Dept Radiol, Fac Med, Bangkok, Thailand
[6] Univ Ulsan, Coll Med, Asan Med Ctr, Dept Gastroenterol, Seoul, South Korea
[7] Chulalongkorn Univ, Div Oncol, Dept Med, Fac Med, Bangkok, Thailand
[8] Chulalongkorn Univ, Dept Radiol, Intervent Radiol Unit, Fac Med, Bangkok, Thailand