The third author Robins along with Miguel Hernan have a great, free book on causal inference: https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/

The third author Robins along with Miguel Hernan have a great, free book on causal inference: https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/ https://www.hsph.harvard.edu/miguel-hernan/causal-inference-...