[Exploration of the constant of upper-lip height].
D000293:Adolescent; D000328:Adult; D000886:Anthropometry; D002648:Child; D002675:Child, Preschool; D005145:Face / Q000033:anatomy & histology; D005260:Female; D006801:Humans; D007223:Infant; D008046:Lip / Q000033:anatomy & histology*; D008297:Male