{"nct_id":"NCT04772534","title":"Immunogenicity and Safety of the 9-valent Human Papillomavirus (9vHPV) Vaccine in Japanese Boys and Girls (V503-066)","status":"COMPLETED","status_verified_date":"2025-05","start_date":"2021-05-17","start_date_type":"ACTUAL","primary_completion_date":"2024-04-06","primary_completion_date_type":"ACTUAL","completion_date":"2024-04-06","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["MRK"]}