RT Journal Article SR Electronic T1 Interstitial deletion of the long arm of chromosome 4 in a patient with mental retardation and abnormal phenotype. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 477 OP 477 DO 10.1136/jmg.19.6.477 VO 19 IS 6 A1 del Valle Torrado, M A1 Labarta, J D A1 Migliorini, A M YR 1982 UL http://jmg.bmj.com/content/19/6/477.abstract AB