Estimating the Marginal Causal Effect and Potential Impact of Waterpipe Smoking on Risk of Multiple Sclerosis Using the Targeted Maximum Likelihood Estimation Method: A Large, Population-Based Incident Case-Control Study

1. Abdollahpour, I.
2. Nedjat, S.
3. Almasi-Hashiani, A.
4. Nazemipour, M.
5. Mansournia, M.A.
6. Luque-Fernandez, M.A.