Differences in MDS-UPDRS scores based on Hoehn and Yahr stage and disease duration: results of a large international multicentre study of 3206 patients (the QUALPD study)

¹Department of Neurology, P.J.Safarik University in Kosice, Kosice, Slovakia, ²National Center of Epidemiology and CIBERNED, Carlos III Institute of Health, Madrid, Spain, ³Department of Neurology, University of Pecs, Pecs, Hungary, ⁴Institute of Mathematics, P.J.Safarik University in Kosice, Kosice, Slovakia, ⁵Movement Disorders Unit, Instituto Nacional de Neurologia y Neurocirugia, Mexico DF, Mexico, ⁶Département des maladies du système nerveux, Sorbonne Universités, UPMC Univ Paris; and INSERM UMRS_1127, CIC_1422; and CNRS UMR_7225; and AP-HP; and ICM, Hôpital Pitié-Salpêtrière, Paris, France, ⁷Department of Neurology and Neurosurgery, University of Tartu, Tartu, Estonia, ⁸Medical University of Innsbruck, Innsbruck, Austria, ⁹Neurology department, Russian Medical Academy of Postgraduate Education, Moscow, Russian Federation, ¹⁰Sobell Department of Motor Neuroscience, UCL Institute of Neurology, London, United Kingdom, ¹¹Department of Neurological Sciences, Rush University Medical Center, Chicago, USA, ¹²Kosice, Slovakia