1 Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark. NMN@ssi.dk.
2 Focused Research Unit in Neurology, Department of Neurology, Hospital of Southern Jutland, University of Southern Denmark, Aabenraa, Denmark. NMN@ssi.dk.
3 Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.
4 Section for Clinical Mass Spectrometry, Danish Center for Neonatal Screening, Department of Congenital Disorders, Statens Serum Institut, Copenhagen, Denmark.
5 iPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Copenhagen, Denmark.
6 Test Center Denmark, Statens Serum Institut, Copenhagen, Denmark.
7 Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
8 Focused Research Unit in Neurology, Department of Neurology, Hospital of Southern Jutland, University of Southern Denmark, Aabenraa, Denmark.
9 Multiple Sclerosis Clinic of Southern Jutland (Sønderborg, Kolding, Esbjerg), Department of Neurology, Hospital of Southern Jutland, University of Southern Denmark, Sønderborg, Denmark.
10 Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
11 Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
12 The Danish National Biobank, Statens Serum Institut, Copenhagen, Denmark.
13 Pharmacovigilance Research Centre, Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark.