Ronald Herberman, MD, the director of the University of Pittsburgh Cancer Institute and UPMC Cancer Centers, plans to issue an advisory to faculty and staff about the possible health risks associated with cellular phone use. The advisory suggests measures to limit exposure to electromagnetic radiation emitted by the devices. It also recommends that children not use cell phones except in emergencies. Herberman said he hoped the suggestions would spread to others within Pitt and the University of Pittsburgh Medical Center, as well as to the general public.