Prof Graves is the Deputy Director of the Programme in Health Services & Systems Research at Duke-NUS and the SingHealth Duke-NUS Health Services Research Institute. His areas of knowledge include health economics, health services research, decision making and cost-effectiveness. He is interested in projects that show high and low-value care, as well as the processes around implementing new policies. His major focus is on showing how health services can be improved at low cost, or even improved with cost savings. He enjoys collaborating with clinicians who wish to improve the performance of health services. Prof Graves has made contributions of international significance, publishing over 250 articles in top-ranking peer reviewed journals such as JAMA, BMJ, AIDS, Health Economics, Clinical Infectious Diseases, Lancet Infectious Diseases, The Journal of Infectious Diseases and Emerging Infectious Diseases.