?:authorAffiliation
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[\'Department of Public Health, Graduate School, Yonsei University, Seoul 03772, Korea.\', \'Institute of Health Services Research, Yonsei University, Seoul 03772, Korea.\', \'Chief Operating Officer (COO), CHA Health Systems, Inc., Los Angeles, CA 90010, USA.\', \'Department of Preventive Medicine, Yonsei University College of Medicine, Seoul 03772, Korea.\']
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