Treatments of Parkinson Disease
Arch Neurol 60:1680-1684, Shults,C.W., 2003
Nonmotor Fluctuations in Parkinson's Disease
Neurol 59:408-413, Witjas,T.,et al, 2002
Nonmotor Fluctuations in Patients with Parkinson's Disease
Neurol 47:1180-1183, Hillen,M.E.&Sage,J.I., 1996
Drug Treatment of Parkinson's Disease
BMJ 310:575-579, Quinn,N., 1995