But that information is also effective in convincing smokers to quit, said Gary Parkes, a family physician in Hertfordshire outside London, who led the study published in the British Medical Journal.

• Gary Parkes是Hertfordshire的一个家庭医生，他是在英国医疗杂志上发表的这个研究的组织者，他说，传递这个信息给患者对让他们想戒烟是很有效的。