In Sun Park(Dept. of Optometry, Graduate school of Public Health Eulji,Universiity, Master Science in Clinical Optometry, Marshall B. Ketchum University)
Yong Jae Lee(Dept. of Optometry, Graduate school of Public Health Eulji,Universiity)
Jung Un Jang(Dept. of Optometry, Graduate school of Public Health Eulji,Universiity)
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