The NCCTG consists of a network of cancer specialists at community clinics , hospitals and medical centers in the United States , Canada and Mexico .
The North Central Cancer Treatment Group ( NCCTG ) is an international clinical research group sponsored by the National Cancer Institute .
The research group consists of a network of cancer specialists at community clinics , hospitals and medical centers in the United States , Canada and Mexico .
The North Central Cancer Treatment Group ( NCCTG ) is an international clinical research group sponsored by the National Cancer Institute .