1 Department of Healthcare Administration and Policy, School of Public Health, University of Nevada, Las Vegas, Nevada. Electronic address: yonsu.kim@unlv.edu.
2 Department of Epidemiology and Biostatistics, School of Public Health, University of Nevada, Las Vegas, Nevada.
3 Department of Economics, Jeonbuk National University, Jeonbuk, Republic of Korea.
4 Department of Internal Medicine, Kirk Kerkorian School of Medicine, University of Nevada, Las Vegas, Nevada.
5 Department of Healthcare Administration and Policy, School of Public Health, University of Nevada, Las Vegas, Nevada.