In recent years, the field of epidemiology has evolved into what many claim is the "gold standard" for concluding that an agent is the true cause of disease in certain exposed populations. This has been reflected in numerous occupational and environmental health regulations, as well as legal decisions. Our team has considerable experience in designing and conducting epidemiology studies in the field of occupational health. In addition, we have special expertise when it comes to conducting either retrospective exposure assessments or simulation studies to fill in data gaps in the exposure assessment aspect of epidemiology.