Cosnett, J E Multiple sclerosis and neuromyelitis optica in tropical and subtropical countries. [electronic resource] - Medical hypotheses Jan 1981 - 61-3 p. digital Publication Type: Journal Article ISSN: 0306-9877 Standard No.: 10.1016/0306-9877(81)90022-0 doi Subjects--Topical Terms: Demyelinating Diseases--epidemiologyHLA AntigensHumansMultiple Sclerosis--epidemiologyNeuromyelitis Optica--epidemiologySunlightTropical Climate