title: [Twin and occlusion types].
mesh_terms: D000293:Adolescent; D001789:Blood Group Antigens; D002648:Child; D002681:China; D003766:Dental Occlusion; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000097:blood / Q000235:genetics*
chemical_list: D001789:Blood Group Antigens