@article {karim2018comparison,
	title = {Comparison of statistical approaches dealing with time-dependent confounding in drug effectiveness studies},
	journal = {Statistical methods in medical research},
	volume = {27},
	number = {6},
	year = {2018},
	pages = {1709{\textendash}1722},
	publisher = {SAGE Publications Sage UK: London, England},
	author = {Karim, Mohammad Ehsanul and Petkau, John and Gustafson, Paul and Platt, Robert W and Tremlett, Helen and BeAMS Study Group}
}
