1 Division of Gastroenterology, Endoscopic Center, Changhua Christian Hospital and Yuan Lin Branch, Department of Hospitality Management, MingDao University, Changhua, Taiwan. Electronic address: ychen02@gmail.com.
2 Department of Medical, China Medical University, Asian University, Taichung, Taiwan.
3 Division of Gastroenterology, Endoscopic Center, Changhua Christian Hospital and Yuan Lin Branch, Department of Hospitality Management, MingDao University, Changhua, Taiwan.