RT Journal Article SR Electronic T1 Correction for vol. 37, p. 241 JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 894 OP 894 DO 10.1136/jmg.38.12.894a VO 38 IS 12 YR 2001 UL http://jmg.bmj.com/content/38/12/894.2.abstract AB