TY - GEN AU - Buttmann,Mathias AU - Stoll,Guido TI - Case reports of PML in patients treated for psoriasis SN - 1533-4406 PY - 2013///0919 KW - Dermatologic Agents KW - adverse effects KW - Female KW - Fumarates KW - Humans KW - Immunologic Deficiency Syndromes KW - chemically induced KW - Leukoencephalopathy, Progressive Multifocal KW - Male N1 - Publication Type: Letter; Comment UR - https://doi.org/10.1056/NEJMc1307680 ER -