1 School of Medicine, Chung Shan Medical University, Taichung, Taiwan; Library, Chung Shan Medical University Hospital, Taichung, Taiwan; Evidence-based Medicine Center, Chung Shan Medical University Hospital, Taichung, Taiwan.
2 School of Medicine, Chung Shan Medical University, Taichung, Taiwan; Institute of Medical Education, Chi Mei Medical Center, Tainan, Taiwan. Electronic address: sixsamurai.shien15@gmail.com.