HPV Vaccination and Risk of Head and Neck Cancers: A Large Real-World Cohort Study.
IMPORTANCE Human papillomavirus (HPV) is a primary cause of head and neck cancers (HNC), especially oropharyngeal squamous cell carcinoma (OPSCC). The real-world effectiveness of HPV vaccination in preventing HNC has not been well-defined. OBJECTIVE This study aimed to determine whether HPV vaccination is associated...