@article {10369,
	title = {Observational studies of disease modifying therapies for multiple sclerosis: Methodological challenges and opportunities},
	journal = {British Medical Journal},
	volume = {354},
	year = {2016},
	pages = {i3518},
	author = {Shirani, A and Zhao, Y and Karim, ME and Kingwell, E and Petkau, J and Gustafson, P and Tremlett, H}
}
