1. Department of Mechanical Engineering, National Central University, Jhongli, Taoyuan, Taiwan 320 e-mail:
2. Department of Mechanical Engineering, National Central University, Jhongli, Taoyuan, Taiwan 320; Division of Plastic and Reconstruction Surgery, Taipei Veterans General Hospital, Taipei, Taiwan 112
3. Department of Mechanical Engineering, National Central University, Jhongli, Taoyuan, Taiwan 320