TY - GEN AU - Steiner,Israel TI - PML: underdiagnosed in MS patients on natalizumab SN - 1474-4465 PY - 2010///0607 KW - Antibodies, Monoclonal KW - therapeutic use KW - Antibodies, Monoclonal, Humanized KW - Disease Progression KW - Early Diagnosis KW - Europe KW - epidemiology KW - Humans KW - Immunologic Factors KW - Incidence KW - Leukoencephalopathy, Progressive Multifocal KW - diagnosis KW - Multiple Sclerosis KW - Natalizumab KW - Review Literature as Topic KW - United States N1 - Publication Type: Comment; Letter UR - https://doi.org/10.1016/S1474-4422(10)70122-8 ER -