CGHE members span the University of Michigan and the globe, including faculty experts, research collaborators, scholars, and community partners. Search for Members with Keywords, Sponsors, Locations, or Categories + Sarah Hortsch, PhD, MSW, RN Evolutionary medicine and chronic disease Lindsay Kobayashi, PhD, MS Social epidemiology and cognitive aging David (Dave) Ripin, PhD Prevention and treatment of infectious diseases Hang Yu, PhD, MA Development economics, health impact analysis