Experts at e-cigarette summit ponder need for regulation
Switching to e-cigarettes could save millions of smokers' lives, a conference on the rapidly expanding use of the devices heard Tuesday, though some delegates warned more research on the health effects is needed. Duration: 01:13
Switching to e-cigarettes could save millions of smokers' lives, a conference on the rapidly expanding use of the devices heard Tuesday, though some delegates warned more research on the health effects is needed. Duration: 01:13
