1. Prevalence of multiple sclerosis in Saskatoon;Hader;Can Med Assoc J,1982
2. Survey of persons with multiple sclerosis in Ottawa 1974-1975;Bennett;Can J Public Health,1976
3. Epidemiology of multiple sclerosis in London and Middlesex County, Ontario, Canada;Hader;Neurology,1988
4. The distribution of multiple sclerosis and environmental sanitation. Progress in MS: research and treatment;Alter;Israel J Med Sci,1972
5. A reappraisal of the epidemiology of multiple sclerosis in Olmsted County, Minnesota;Wynn;Neurology,1990