1. Department of Health Administration and Management, Soonchunhyang University, Asan, Korea
2. Department of Health Care Administration and Policy, University of Nevada Las Vegas, Las Vegas, NV, USA
3. School of Social Work, San Diego State University, San Diego, CA, USA
4. Department of Family Medicine, Yonsei University College of Medicine, Seoul, Korea
5. Department of Family Medicine, University of Nevada Las Vegas School of Medicine, Las Vegas, NV, USA
6. Department of Medicine, University of Arizona College of Medicine, Tucson, AZ, USA
7. University of Nevada Reno School of Medicine, Reno, NV, USA
8. Department of Internal Medicine, University of Nevada Las Vegas School of Medicine, Las Vegas, NV, USA