Sofia Peterson January 20, 2025 CANADA, CANCER PREVENTION, CHAPEL HILL, CLINICAL TRIALS, ETHAN BASCH, HEALTHCARE, HOSPITAL FOR SICK CHILDREN, HPV VACCINE, JAMA, LILLIAN SUNG, MEDICINE, NORTH AMERICA, RESEARCH, SUNG, TORONTO, UNITED STATES, UNIVERSITY OF NORTH, UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL