Gabapentin, Methadone, and Oxycodone With or Without Venlafaxine Hydrochloride in Managing Pain in Participants With Stage II-IV Squamous Cell Head and Neck Cancer Undergoing Chemoradiation Therapy
Roswell Park Cancer Institute
Roswell Park Cancer Institute
M.D. Anderson Cancer Center
M.D. Anderson Cancer Center
M.D. Anderson Cancer Center
Mayo Clinic