1. Stolley PD, Lasky T. Investigation disease patterns: the science of epidemiology. New York: Scientist American Library; 1995.
2. Woodward M. Epidemiology: study design and data analysis. 2nd ed. Boca Raton: Chapman & Hall/CRC; 2005.
3. Hill AB. The environment and disease: association or causation? Proc R Soc Med. 1965;5:295–300.
4. Guide on Epidemiology. Reference manual on scientific evidence. 3rd ed. Washington, DC: National Academies Press; 2011.
5. Koehler SA. Forensic epidemiology. Boca Raton: CRC Press Taylor & Francis Group; 2010.