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APA Citation
Chataway, J., Mander, A., Robertson, N., Sawcer, S., Deans, J., Fraser, M., Broadley, S., Clayton, D., & Compston, A. (2001). multiple sclerosis in sibling pairs: an analysis of 250 families. Journal of neurology, neurosurgery and psychiatry, 71(6), 757–761. http://access.bl.uk/ark:/81055/vdc_100135571322.0x000037