RT Journal Article SR Electronic T1 What do we mean by genetic testing? JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 749 OP 752 DO 10.1136/jmg.34.9.749 VO 34 IS 9 A1 P S Harper YR 1997 UL http://jmg.bmj.com/content/34/9/749.abstract AB