Ravi Patel Januari 27, 2025 AUSTRIA, CANCER PREVENTION, CHRISTOPH HOLLER, CLINICAL TRIALS, DEPARTMENT OF DERMATOLOGY, EUROPE, HEALTHCARE, HPV VACCINE, JULIA RESSLER, LAHERPAREPVEC, MEDICINE, MEDUNI VIENNA, RESEARCH, SKIN TUMOUR CENTRE, ST. ANNA CHILDREN ' S HOSPITAL, UNIVERSITY HOSPITAL VIENNA, VIENNA