1. Roy J. Carver Department of Biomedical Engineering, College of Engineering, University of Iowa , Iowa City, IA 52240
2. Department of Biomedical Engineering, University of Arkansas , Fayetteville, AR 72701
3. Roy J. Carver Department of Biomedical Engineering, College of Engineering, University of Iowa , Iowa City, IA 52242
4. Roy J. Carver Department of Biomedical Engineering, College of Engineering, University of Iowa , 5629 Seamans Center, Iowa City, IA 52242 ; , Iowa City, IA 52242
5. Department of Orthopedics and Rehabilitation, Carver College of Medicine, University of Iowa , 5629 Seamans Center, Iowa City, IA 52242 ; , Iowa City, IA 52242