PT - JOURNAL ARTICLE AU - R. T. C. Pratt TI - GENETIC STUDIES IN MENTAL SUBNORMALITY Part I. Familial idiopathic severe subnormality: the question of a contribution by X-linked genes AID - 10.1136/jnnp.37.1.120-b DP - 1974 Jan 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 120--120 VI - 37 IP - 1 4099 - http://jnnp.bmj.com/content/37/1/120.3.short 4100 - http://jnnp.bmj.com/content/37/1/120.3.full SO - J Neurol Neurosurg Psychiatry1974 Jan 01; 37