1. Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea.
2. Department of Mechanical Engineering, Korea Polytechnic University, Siheung, Republic of Korea.
3. Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina.
4. Department of Plastic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.