The Swedish BioFINDER Sleep Study

​ Conditions: Parkinson´s Disease; REM Sleep Behavior Disorder (iRBD); Lewy Body Disease; Synucleinopathy; Synucleinopathies Interventions: Diagnostic Test: Dopamine transporter PET scan with [18F]FE-PE2I; Diagnostic Test: Magnetic resonance imaging (MRI); Diagnostic...