"Vision test validation study for the health examination survey among youths 12-17 years"
"Vision test validation study for the health examination survey among youths 12-17 years"@en
"Vision test validation study for the health examination survey among youths 12-17 years : validation of selected parts of the vision test battery used in the health examination survey of 1966-70 among youths 12-17 years of age against a standard clinical ophthalmological examination for distance visual acuity and eye muscle imbalance"
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Youth Health and hygiene United States Statistics.
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