Thymic germinal centers and corticosteroids in myasthenia gravis: an immunopathological study in 1035 cases and a critical review - Truffault, F; de Montpreville, V; Eymard, B; Sharshar, T; Le Panse, R; Berrih-Aknin, S (Clin Rev Allergy Immunol, 2017)