Cockayne Syndrome: Review of 140 CasesAm J Med Genet 42:68-84, Nance,M.A. &Berry,S.A., 1992
Physical Features of Prader-Willi Syndrome in NeonatesAm J Dis Child 144:1251-1254, Aughton,D.J.&Cassidy,S.B., 1990