Combination of ‘idiopathic’ REM sleep behaviour disorder and olfactory dysfunction as possible indicator for alpha- synucleinopathy demonstrated by dopamine transporter FP-CIT-SPECT - Stiasny-Kolster, K; Doerr, Y; Moller, JC; Hoffken, H; Behr, TM; Oertel, WH; Mayer, G (Brain, 2005)