ASSOCIATION OF SPORADIC AMYOTROPHIC LATERAL SCLEROSIS WITH HUMAN T LYMPHO-TROPIC VIRUS 1, HUMAN IMMUNODEFICIENCY VIRUS AND HUMAN HERPES VIRUS 8 - A. Tarazi,; S. Nafissi,; A. A. Amirzargar,; P. Ayatollahi A. Soltanzadeh, (Acta Medica Iranica)