Mr. Riordan is an epidemiologist and risk assessment scientist with approximately ten years of experience in consulting and public health practice. His primary areas of training and expertise include occupational and environmental epidemiology, cancer epidemiology, large-scale systematic reviews and meta-analyses, biostatistics/data analysis, exposure assessment and risk assessment. He has worked and published on topics including asbestos, talc, solvents, pesticides, medical devices, pharmaceuticals, and various consumer products.