TO CONDUCT AND SUPPORT PROGRAMS AND ACTIVITIES AIMED AT SOLVING SOME OF THE WORLD'S GREATEST PUBLIC HEALTH CHALLENGES, WITH A SPECIFIC FOCUS ON ENABLING HEALTH WORKERS TO HAVE THE GREATEST POSSIBLE IMPACT ON THE HEALTH OF THE PEOPLE THEY SERVE; STRENGTHENING AND IMPROVING HEALTH SYSTEMS; PROVIDING DISASTER AND HUMANITARIAN RELIEF AND FOSTERING AND PROMOTING HEALTH POLICY RESEARCH AND THOUGHT-LEADE…