title: Myasthenia gravis: subgroup classifications - Authors' reply.
authors.affiliation: Department of Clinical Medicine, University of Bergen, N-5020 Bergen, Norway; Department of Neurology, Haukeland University Hospital, Bergen, Norway. Electronic address: Nils.Gilhus@uib.no.
authors.forename: Nils Erik
authors.initials: NE
authors.lastname: Gilhus
authors.affiliation: Department of Neurology, Leiden University Medical Center, Leiden, Netherlands.
authors.forename: Jan J
authors.initials: JJ
authors.lastname: Verschuuren
mesh_terms: D006801:Humans; D009157:Myasthenia Gravis