1. Department of Emergency Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
2. Department of Community Health Services and Rehabilitation Sciences, School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA
3. Health Sciences Library System, University of Pittsburgh, Pittsburgh, PA 15261, USA
4. Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, The State University of New York, Buffalo, NY 14214, USA