RT Journal Article SR Electronic T1 Testing and screening for chromosome abnormalities JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 153 OP 154 DO 10.7861/clinmedicine.9-2-153 VO 9 IS 2 A1 Malcolm A Ferguson-Smith YR 2009 UL http://www.rcpjournals.org/content/9/2/153.abstract