1. Department of Physiology and Biomedical Engineering; Mayo Clinic; Rochester Minnesota, 55905
2. Department of Orthopedic Surgery; Mayo Clinic; Rochester Minnesota, 55905
3. Department of Orthopedics; Zhongnan Hospital of Wuhan University; Wuhan Hubei, 430071 China
4. Department of Cardiovascular Diseases and Center for Regenerative Medicine; Mayo Clinic; Rochester Minnesota, 55905