RT Journal Article SR Electronic T1 A syndrome of mental and physical etardation, speech disorders, and peculiar facies in two sisters. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 60 OP 63 DO 10.1136/jmg.9.1.60 VO 9 IS 1 A1 Mutchinick, O YR 1972 UL http://jmg.bmj.com/content/9/1/60.abstract AB