adenoid cystic carcinoma, radiation therapy, squamous cell carcinoma, tracheal carcinoma, Adolescent, Adult, Aged, Child, Child, Preschool, Databases, Factual, Female, Humans, Infant, Infant, Newborn, Kaplan-Meier Estimate, Logistic Models, Male, Middle Aged, Multivariate Analysis, Proportional Hazards Models, Prospective Studies, Radiotherapy, Adjuvant, Tracheal Neoplasms, Young Adult
