[1
]
Department of Dental Hygiene, Taegu Science University 47 Yeongsong-ro Buk-gu, Daegu,
Korea.
[2
]
Department of Dental Hygiene, College of Science & Technology, Kyungpook National
University, Daegu, Korea.
[3
]
Department of Hospital Management, Graduate School of Public Health, Yonsei University,
Seodaemun-gu, Seoul, Korea.
[4
]
Faculty of Health Science, Daegu Haany University 1 Haanydae-ro, Gyeongsan-si, Gyeongsangbuk-do,
Korea.
[5
]
Department of Preventive Medicine and Public Health College of Medicine, Yeungnam
University 170 Hyunchung-ro, Nam-gu, Daegu, Korea.
[6
]
Department of Epidemiology and Biostatistics, Arnold School of Public Health, University
of South Carolina, Columbia, SC, USA.
[7
]
Department of Preventive Dentistry, School of Dentistry, Kyungpook National University,
Daegu, Korea.