Misdiagnosis of Spasm of the Near ReflexNeurol 26:1018, Griffin,J.F.,et al, 1976
Parkinson's DiseaseIn Handbk of Clinical Neurology, Vinken, P. J. & Bruyn, G. W. , Ed, North-Holland Publ Co, Amsterdam, 6:173, 1968. Selby, G., 1968