Duane Syndrome & Congential Upper-Limb Anomalies:A Familial OccurrenceArch Neurol 34:174, Okihiro,M.M.,et al, 1977
Pediatric NeurologyPsych Annals 2:1, , 1972
The Cornelia de Lange SyndromeJ Pediatr 63:1000-1020, Ptacek,L.J., 1963