Blood neurofilament light chain in Parkinson's disease.

"Declarations Conflict of interestCB received a grant from the Hilde-Ulrichs-Stiftung, served on scientific advisory boards for Bial, Hormosan Pharma, Merz Pharmaceuticals and Zambon and received honoraria for lectures from Abbvie, Bial, Stada Pharma, TAD Pharma, UCB Pharma and Zambon. MU has nothing to declare. TM has nothing to declare. CUC reports personal fees from Desitin, Pfizer and Zambon outside the submitted work. Conflict of interest CB received a grant from the Hilde-Ulrichs-Stiftung, served on scientific advisory boards for Bial, Hormosan Pharma, Merz Pharmaceuticals and Zambon and received honoraria for lectures from Abbvie, Bial, Stada Pharma, TAD Pharma, UCB Pharma and Zambon. MU has nothing to declare. TM has nothing to declare. CUC reports personal fees from Desitin, Pfizer and Zambon outside the submitted work."

"Funding Open Access funding enabled and organized by Projekt DEAL. Dr. Choe was supported by an Else Kröner Exzellenzstipendium from the Else Kröner-Fresenius Stiftung during the conduct of the study (grant number: 2018_EKES.04)."