Dr. Chartres is the Associate Director of Science and Policy at UCSF’s PRHE and is focused on environmental health research translation methods and the promotion of evidence-based policies to prevent exposures to harmful environmental chemicals. In this role, he oversees the Navigation Guide Working Group, which is focused on increasing the knowledge and awareness of systematic review methods in clinical and policy decision-making arenas. He is an expert in the application of systematic review methods to observational studies in the public and environmental health fields and conducted the first in depth assessment of the methods used by national and international organizations for hazard identification and the risk assessment of environmental hazards. He has collaborated with international teams of researchers to evaluate the tools currently used to assess risk of bias risk in observational studies, which is central to the development of credible public health guidelines and environmental risk assessments. Dr. Chartres is also part of the World Health Organization/International Labor Organization Joint Working Group on Occupational Health Systematic Review Methods, which aims to estimate the global burden of work-related disease and injury.