Kalbe, Elke [0000-0001-8603-2545] ; Folkerts, Ann-Kristin [0000-0003-2168-140X] ; Witt, Karsten [0000-0002-9384-3474] ; Buhmann, Carsten [0000-0001-8540-3789] ; Liepelt-Scarfone, Inga [P:(DE-2719)2109499] ; Group, German Parkinson’s Guidelines