@article {10367,
	title = {Dealing with treatment-confounder feedback and sparse follow-up in longitudinal studies - application of a marginal structural model in a multiple sclerosis cohort.  },
	journal = {American Journal of Epidemiology},
	volume = {189},
	year = {2020},
	pages = {To appear},
	author = {Karim, ME and Tremlett, H and Zhu, F and Petkau, J and Kingwell, E}
}
