Marcus Johnson
AMERICAN ASSOCIATION FOR CANCER RESEARCH, CANADA, CANCER PREVENTION, CARL CHRISTIE, CHRISTIE, CLINICAL TRIALS, COVID-19, DISEASE PREVENTION, HPV VACCINE, KY, LOUISVILLE, MEDICINE, NATIONAL CANCER INSTITUTE, NORTH AMERICA, NORTON CANCER INSTITUTE, RUSSELL, SHIVELY, U. S. PREVENTIVE SERVICES TASK FORCE, UNITED STATES