Basic Epidemiology (71 mins)
Scroll down to "Chapter 5: Causation in epidemiology" and read pages 83 to 97. Learn more about causation in epidemiology. Answer 'Study questions' 5.1, 5.2, 5.4, and 5.3 on pages 96 and 97. Be sure to check your answers on pages 195-196.
Click http://apps.who.int/iris/bitstream/handle/10665/43541/9241547073_eng.pdf link to open resource.