1. Central Arkansas Veterans Healthcare System and the Departments of Medicine, and Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas.
2. Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, People's Republic of China.
3. College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China.