Definitions and Classification of Tic Disorders
Arch Neurol 50:1013-1016, Fahn,S.,et al, 1993
The Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal Infection (PANDAS) Subgroup: Separating Fact From Fiction
Pediatrics 113:907-911, Swedo,S.,et al, 2004