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NCT00052611 2018-03-29Celecoxib in Preventing Cancer in Patients With Oral Leukoplakia and/or Head and Neck DysplasiaDana-Farber Cancer InstitutePhase 2 Completed23 enrolled
NCT00101335 2013-07-11Celecoxib in Preventing Head and Neck Cancer in Patients With Oral LeukoplakiaFox Chase Cancer CenterPhase 2 Completed