"Our findings suggest that smoking parents who start using e-cigarettes may have done so out of a desire to quit smoking," says Emara Nabi-Burza, MS, of the MGHfC Division of General Academic Pediatrics and the Massachusetts General Hospital (MGH) Tobacco Research and Treatment Center (TRTC), lead author of the report published online in Academic Pediatrics. "However, many of them end up becoming dual users of cigarettes and e-cigarettes, maintaining their addiction to nicotine and also exposing their children to e-cigarette aerosols, which contain hazardous substances."