Yu‑Hsi Hsieha,b, Felix W. Leungc,d*
aDivision of Gastroenterology, Department of Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan, bSchool of Medicine,
Tzu Chi University, Hualien, Taiwan, cSepulveda Ambulatory Care Center, Veterans Affairs Greater Los Angeles Healthcare System, North Hill, CA, USA, dDivision of Gastroenterology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
Open Access funded by Buddhist Compassion Relief Tzu Chi Foundation