title: Marginal Structural Models: unbiased estimation for longitudinal studies.
authors.affiliation: Department of Epidemiology and Biostatistics, McGill University, 1020 Pine Avenue West, Montreal, QC, H3A 1A2, Canada. erica.moodie@mcgill.ca
authors.forename: Erica E M
authors.initials: EE
authors.lastname: Moodie
authors.forename: D A
authors.initials: DA
authors.lastname: Stephens