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 Gary Harper, PhD, MPH, MS Mental health promotion and HIV prevention Timothy (Tim) Hofer, MD, MS Quality improvement and healthcare delivery Kelley Kidwell, PhD Clinical trial designs & analysis Joseph (Joe) Kolars, MD, MACP Health professions education, health systems strengthening and capacity sharing among healthcare workers Rob Stephenson, PhD Sexual and reproductive health, HIV prevention, sexual and gender minority health, and intervention development testing