BacchettaFMathiasASchluepMet al. Progressive multifocal leukoencephalopathy in two natalizumab-treated stepsisters: An intriguing coincidence. Mult Scler2017; 23(2): 300–303.
2.
HavlaJBertheleAKumpfelTet al. Co-occurrence of two cases of progressive multifocal leukoencephalopathy in a natalizumab “infusion group.”Mult Scler2013; 19(9): 1213–1215.