1Department of Health, Nutrition, and Exercise Sciences, North Dakota State University, NDSU Dept. 2620, Fargo, USA
2Department of Medicine, Divisions of Infectious Diseases and Geriatric Medicine, University of Colorado-Anschutz Medical Campus, Aurora, USA
3Center for Clinical Management Research, VA Ann Arbor Healthcare System, Ann Arbor, USA
4Sanford Research, Sioux Falls, USA
5Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, USA