title: Monozygosity and the burden of proof.
mesh_terms: D001789:Blood Group Antigens; D003933:Diagnosis; D004200:Diseases in Twins; D004777:Environment; D005260:Female; D006801:Humans; D011247:Pregnancy; D014071:Tooth Abnormalities / Q000235:genetics; D014427:Twins; D014430:Twins, Monozygotic
chemical_list: D001789:Blood Group Antigens