title: A factor analysis of the environmental correlation matrix from the craniofacial traits of male monozygotic twins in growing age.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002508:Cephalometry; D002648:Child; D004777:Environment; D005145:Face / Q000033:anatomy & histology*; D005163:Factor Analysis, Statistical; D005260:Female; D006257:Head / Q000033:anatomy & histology*; D006801:Humans; D008297:Male; D008334:Mandible / Q000033:anatomy & histology; D008445:Maxillofacial Development; D011247:Pregnancy; D014427:Twins