Tourettes Syndrome
BMJ 347:f4964, Cavanna, A.E. & Seri, S., 2013
Objective Assessments of Longitudinal Outcome in Gilles de la Tourette's Syndrome
Neurol 61:936-940, Pappert,E.J.,et al, 2003
Tourette's Syndrome
Lancet 360:1577-1586, Leckman,J.F., 2002