Department of Neurology;
Medisch Centrum Leeuwarden;
Leeuwarden;
The Netherlands;
Department of Neurology;
Isala Zwolle;
Zwolle;
The Netherlands;
Department of Neurology;
Martini Ziekenhuis Groningen;
Groningen;
The Netherlands;
Late; Stage; Parkinson; Disease; Levodopa; Disease; Duration; Fluctuations; Dyskinesia; Bradykinesia;