title: The role of twins in epidemiological studies.
authors: Multiple Births Foundation, Queen Charlotte's and Chelsea Hospital, London, England.
authors: E M
authors: EM
authors: Bryan
mesh_terms: D003625:Data Collection; D004813:Epidemiology; D005823:Genetics; D006801:Humans; D014427:Twins / Q000145:classification / Q000706:statistics & numerical data