By Amy Norton HealthDay Reporter http://www.usnews.com/cmsmedia/1e/9766e896bb26b5019bfc88abda37b9/HD695576gooddogfoundation.jpg (HealthDay News) - People undergoing chemotherapy and radiation for cancer may get an emotional lift from man's best friend, a new study suggests. The study, of patients with head and neck cancers, is among the first to scientifically test the effects of therapy dogs - trained and certified pooches brought [...]