... Cost of multiple sclerosis by level of disability: a review of literature. Mult Scler 2005, 11:232-239.3. Burden of illness of multiple sclerosis: Part I: Cost of illness.The Canadian Burden of ... of illness of multiple sclerosis: Part II: Quality of life.The Canadian Burden of Illness Study Group. Can J Neurol Sci1998, 25:31-38.7. Nortvedt MW, Riise T, Myhr KM, Nyland HI: Quality of ... andquality of life of people with multiple sclerosis. Disabil Rehabil2001, 23:516-521.10. Minden SL, Frankel D, Hadden LS, Srinath KP, Perloff JN: Disabilityin elderly people with multiple sclerosis:...