Fig. 1

Flow chart showing the flow of the healthy controls (HC) and patients with Parkinson’s disease (PD) through the study. PD patients were divided using affective (MOOD) and chronic fatigue syndrome (CFS) symptoms into those with low versus high MOOD + CFS scores. The latter were based on part I or non-motor Experiences of Daily Living. Mg: magnesium, Ca: calcium, Cu: copper, Zn zinc.