Development of a simplified smell test to identify Parkinson's disease using multiple cohorts, machine learning and item response theory

Li J, Grimes K, Saade J, Tomlinson JJ, Mestre TA, Schade S, Weber S, Dakna M, Wicke T, Lang E, Trenkwalder C, Salmaso N, Frank A, Ramsay T, Manuel D; aSCENT-PD Investigators; Mollenhauer B, Schlossmacher MG.