1. Present conceptualization of early childhood neurodevelopmental disabilities;Shevell;J Child Neurol,2010
2. Practice parameter: evaluation of the child with global developmental delay;Shevell;Neurology,2003
3. Global developmental delay and mental retardation/intellectual disability;Sherr,2012
4. Global developmental delay and mental retardation/intellectual disability: conceptualization, evaluation and etiology;Shevell,2008
5. Etiology and evaluation of neurodevelopmental disabilities;Shevell,2009