[Stay of children in fresh air during the great pause and the problem of increasing manifestations of fatigue].
D019069:Cell Respiration; D002648:Child; D005221:Fatigue; D006801:Humans; D007223:Infant; D012119:Respiration; D012572:School Health Services; D014829:Vocational Education
RESPIRATION/in infancy and childhood; SCHOOL HEALTH; VOCATIONAL EDUCATION