1Copenhagen CSF Study Group, Copenhagen, Denmark
2Department of Neurosurgery 6031, Rigshospitalet, Inge Lehmanns Vej 6, 2100 Copenhagen, DK Denmark
3Department of Neurosurgery, King Fahd University Hospital, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
4European Association of Neurosurgical Societies (EANS), CSF Task Force, Brussels, Belgium
5Department of Neurosurgery, Wellington Hospital, London, UK
6Department of Neurosurgery, Radboud University Nijmegen Medical Centre, Holland Nijmegen, Netherlands
7Department of Basic and Clinical Neuroscience, Kings College London, Maurice Wohl Clinical Neuroscience Institute, London, UK
8Department of Neurosurgery, Hofstra Northwell School of Medicine in Hempstead, Hempstead, NY USA
9Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
© The Author(s) 2023
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