Ravi Patel Februari 4, 2025 CALIFORNIA, CALIFORNIA CANCER REGISTRY, CANCER PREVENTION, CLINICAL TRIALS, DISEASE PREVENTION, ERIN L. VAN BLARIGAN, HPV VACCINE, JAM, MEDICINE, NATIONAL CANCER INSTITUTE SURVEILLANCE, NORTH AMERICA, RESEARCH, SAN FRANCISCO, UNITED STATES, UNIVERSITY OF CALIFORNIA,, UNIVERSITY OF CALIFORNIA, SAN FRANCISCO