@article {9512,
	title = {Comparison of statistical approaches dealing with time-dependent confounding in drug effectiveness studies},
	journal = {Statistical Methods in Medical Research},
	volume = {27 },
	year = {2018},
	pages = {1709-1722},
	doi = {10.1177/0962280216668554},
	url = {http://journals.sagepub.com/doi/abs/10.1177/0962280216668554},
	author = {Karim, M.E. and Petkau, J. and Gustafson, P. and Platt, R.W. and Tremlett, H. and BeAMS Study Group}
}
