Head posture and the morphology of the first cervical vertebra.
D000293:Adolescent; D000328:Adult; D001368:Axis, Cervical Vertebra / Q000033:anatomy & histology; D002508:Cephalometry; D001270:Cervical Atlas / Q000033:anatomy & histology*; D005260:Female; D006257:Head / Q000033:anatomy & histology*; D006801:Humans; D008297:Male; D011187:Posture