Ophthalmologic Features of Parkinson's DiseaseNeurol 62:177-180, Biousse,V.,et al, 2004
Longitudinal Exper with Botulinum Toxin Injections for Treat of Blepharospasm & Cervical DystoniaNeurol 43:834-836, Jankovic,J.&Schwartz,K.S., 1993