RT Journal Article SR Electronic T1 Correction JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 270 OP 270 DO 10.1136/jmedgenet-2012-101288corr1 VO 50 IS 4 YR 2013 UL http://jmg.bmj.com/content/50/4/270.abstract AB