1. Department of Orthopedics and Rehabilitation, Department of Biomedical Engineering, University of Iowa, Iowa City, IA, USA
2. Department of Mechanical and Industrial Engineering, Department of Orthopedics and Rehabilitation, University of Iowa, Iowa City, IA, USA
3. Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
4. Department of Family Medicine, University of Iowa, Iowa City, IA, USA
5. Department of Orthopedics and Rehabilitation, Department of Biomedical Engineering, Department of Mechanical and Industrial Engineering, University of Iowa, Iowa City, IA, USA