Socio-economic factors and school health education in Greece.
D000293:Adolescent; D001294:Attitude to Health; D002648:Child; D003071:Cognition; D005260:Female; D006115:Greece; D006266:Health Education; D006801:Humans; D008297:Male; D012044:Regression Analysis; D012574:Schools; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires