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Hadjimichael O, Vollmer T, Oleen-Burkey M; North American Research Committee on Multiple Sclerosis.Hadjimichael O, et al.Health Qual Life Outcomes. 2008 Nov 14;6:100. doi: 10.1186/1477-7525-6-100.Health Qual Life Outcomes. 2008.PMID: 19014588Free PMC article.