More research is needed to define criteria for stopping therapy.
Overall mortality decrease started in 2013 following introduction of 10 new treatments in 2011.
A recent study documents a downward trend in melanoma incidence in adolescents and young adults, but experts disagree about the causes.
In this study, oral cancer risk was used as a negative control since it is not associated with increased exposure to UV radiation.
Of those surveyed in rural communities, 43 percent intended to perform self-exam but did not follow through.