家
;
;Sir Richard Doll, the epidemiologist who discovered the link between smoking and lung cancer in the 1960s, will this week warn that children living near electricity power lines are at an increased risk from leukaemia.
流行病
专家里查德·多尔爵士在20世纪60年代发现了吸烟与肺癌之间的联系。本周，他警告说，住在高压电线附近的孩子得白血病的危险更大。
