1. Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens2Institute for Evidence-Based Practice in the Health Professions, University of Georgia, Athens
2. Department of Statistics, Seoul National University, Seoul, Republic of Korea
3. Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens
4. Departments of Neurology, Anesthesiology–Critical Care Medicine, and Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland