1 National Centre for Register-based Research, Aarhus BSS, Aarhus University, Denmark; Centre for Integrated Register-based Research, CIRRAU, Aarhus University, Aarhus, Denmark. Electronic address: Lolk.ncrr@au.dk.
2 National Centre for Register-based Research, Aarhus BSS, Aarhus University, Denmark; Centre for Integrated Register-based Research, CIRRAU, Aarhus University, Aarhus, Denmark.
3 National Centre for Register-based Research, Aarhus BSS, Aarhus University, Denmark; Department of Neurology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Denmark.