Sorafenib Tosylate in Treating Younger Patients With Relapsed or Refractory Rhabdomyosarcoma, Wilms Tumor, Liver Cancer, or Thyroid Cancer
National Cancer Institute (NCI)
National Cancer Institute (NCI)
University of Michigan Rogel Cancer Center
Memorial Sloan Kettering Cancer Center
Memorial Sloan Kettering Cancer Center
Duke University
National Cancer Institute (NCI)
National Institutes of Health Clinical Center (CC)