Young-Rock Hong1, Jinhai Huo2. 1. Department of Health Services Research, Management, and Policy, College of Public Health and Health Professions, University of Florida, Gainesville, Florida, USA. Electronic address: YoungRock.H@ufl.edu. 2. Department of Health Services Research, Management, and Policy, College of Public Health and Health Professions, University of Florida, Gainesville, Florida, USA.