Photodynamic Therapy Using HPPH in Treating Patients Undergoing Surgery for Primary or Recurrent Head and Neck Cancer
Roswell Park Cancer Institute
Roswell Park Cancer Institute
SWOG Cancer Research Network
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
European Organisation for Research and Treatment of Cancer - EORTC
Case Comprehensive Cancer Center