Funding for this research was provided by:
The article processing charge was funded by the Baden-Wuerttemberg Ministry of Science, Research and Art and the University of Freiburg in the funding programme Open Access Publishing.
Received: 1 August 2020
Accepted: 6 October 2020
First Online: 11 November 2020
Ethics approval and consent to participate
: This retrospective analysis received approval from the local ethics committee of the University of Freiburg (EK Fr 396/18). The patients gave their written informed consent before the lumbar puncture.
: Not applicable.
: SMe: None. KB: None. RD: Lecture fees from Roche and travel grants from Biogen. BF: None. SMa: None. MAS: None. KR: None. DD: None. KN: None. DS: None. HU: Shareholder of the Veobrain: HP: None. KD: Steering Committee Neurosciences, Janssen. LTvE: Advisory boards, lectures, or travel grants within the last three years: Roche, Eli Lilly, Janssen-Cilag, Novartis, Shire, UCB, GSK, Servier, Janssen and Cyberonics. DE: None.