[1
]
Institute of Population Health Sciences, National Health Research Institutes, Miaoli,
Taiwan, China.
[2
]
Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, China.
[3
]
Institute of Sociology, Academia Sinica, Taipei, Taiwan, China.
[4
]
Department of Family Medicine, National Taiwan University Hospital, Taiwan, China.
[5
]
Department of Health Services Administration, China Medical University, Taichung,
Taiwan, China.