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 + Matthew (Matt) Boulton, MD, MPH Health disparities in vaccine preventable diseases Andrew F. Brouwer, PhD, MS, MA Modeling and data science to address problems of infectious disease Timothy (Tim) Hofer, MD, MS Quality improvement and healthcare delivery