ABSTRACT
Epidemiology studies the occurrence, distribution, and determinants of health-related events, states, and processes in specified populations as well as the application of this knowledge in order to control health problems (Miquel Porta, 2016). Put another way, epidemiology is the science that first describes and then studies causes behind the distribution of population health so that we may intervene to prevent disease and promote health (Keyes and Galea, 2014).
