@article{robins2000,
  title={Marginal Structural Models and Causal Inference in Epidemiology},
  author={James M. Robins and Miguel A. Hernán and Babette Brumback},
  year={2000},
  journal={Epidemiology},
  doi={10.1097/00001648-200009000-00011},
  url={https://doi.org/10.1097/00001648-200009000-00011}
}