Citações bibliograficas sobre estudo observacional

1. Gail M. Sullivan, Jack E. Turban, and Kirsten M. Wilkins. "Observational Studies: A Review of Study Designs, Challenges, and Strategies to Reduce Bias." The American Journal of Medicine, vol. 133, no. 2, 2020, pp. 236-241.

2. Miguel A. Hernán and James M. Robins. "Causal Inference from Observational Studies." American Journal of Epidemiology, vol. 155, no. 6, 2002, pp. 587-595.

3. Kenneth J. Rothman, Sander Greenland, and Timothy L. Lash. Modern Epidemiology. 3rd ed., Lippincott Williams & Wilkins, 2008.

4. Jonathan A.C. Sterne, et al. "Multiple imputation for missing data in epidemiological and clinical research: potential and pitfalls." BMJ, vol. 338, 2009, b2393.

5. David A. Grimes and Kenneth F. Schulz. "Bias and causal associations in observational research." The Lancet, vol. 359, no. 9302, 2002, pp. 248-252.