1. Division of Pediatric Surgery, Department of Surgery, Taichung Veterans General Hospital, Taichung 407219, Taiwan
2. Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, Nantou 54561, Taiwan
3. School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
4. Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung 402202, Taiwan