title: Parkinson disease: extranigral, multisystem, and {alpha}-synuclein "plus".
authors: Michail E
authors: ME
authors: Kalaitzakis
authors: Manuel B
authors: MB
authors: Graeber
authors: Stephen M
authors: SM
authors: Gentleman
authors: Ronald K B
authors: RK
authors: Pearce
mesh_terms: D001921:Brain / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D010300:Parkinson Disease / Q000378:metabolism* / Q000473:pathology*; D051844:alpha-Synuclein / Q000378:metabolism*
chemical_list: D051844:alpha-Synuclein