RT Journal Article SR Electronic T1 A short history of medical genetics JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 501 OP 502 DO 10.7861/clinmedicine.9-5-501 VO 9 IS 5 A1 Shirley Hodgson YR 2009 UL http://www.rcpjournals.org/content/9/5/501.abstract