Kuang-Ting Yeh1, Ru-Ping Lee, Wen-Tien Wu. 1. K.-T. Yeh, W.-T. Wu, Hualien Tzu Chi Hospital, Department of Orthopedics, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan, Republic of China and Tzu Chi University, School of Medicine, Hualien, Taiwan, Republic of China R.-P. Lee, Institute Medical Sciences, Tzu Chi University, Hualien, Taiwan, Republic of China.