Danbury Hospital and Norwalk Hospital received approval to join NRG Oncology as primary clinical research sites.  Officials say patients will have expanded access to the latest breast cancer, radiation oncology, and gynecologic cancer clinical trials and treatments--before they are available to the public.  The cancer research organization conducts clinical trials and studies to test new treatments and to advance the field of cancer care.  NRG Oncology says Nuvance Health clinicians, researchers and administrative staff are highly qualified to participate in innovative cancer research on an international level. Doctors involved in the partnership say this is important for hard-to-treat cancers like ovarian cancer, which is the deadliest gynecologic cancer.