Pencegahan Kanker Penelitian Ravi Patel ADVANCES IN, CANCER PREVENTION, CANCER RESEARCH UK, CLINICAL TRIALS, EUROPE, HPV VACCINE, INSTITUTE OF CANCER RESEARCH,, LONDON, MEDICINE, RESEARCH, SCIENCE, THE INSTITUTE OF CANCER RESEARCH, UNITED KINGDOM Studi Menunjukkan Penggunaan Area Target Kecil dalam Radioterapi Kanker Glotik