1. Institute of Polymer Science and Engineering National Taiwan University No. 1, Sec. 4 Roosevelt Road Taipei 10617 Taiwan
2. Division of Plastic and Reconstructive Surgery Department of Surgery Tri‐Service General Hospital National Defense Medical Center Taipei Taiwan
3. Department of Mechanical Engineering National Central University Taoyuan 32001 Taiwan
4. Institute of Cellular and System Medicine National Health Research Institutes Miaoli Taiwan