Search by Medical Condition A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Clinical Trials for Otorhinolaryngologic Neoplasms A Clinical Study on Oncolytic Virus Injection (R130 OV) for the Treatment of Relapsed/Refractory Head and Neck Cancer Quality of Life After Primary TORS vs IMRT for Patients With Early-stage Oropharyngeal Squamous Cell Carcinoma Study of D-Methadone in Patients With Chronic Pain