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.
流行病学专家里查德·多尔爵士在20世纪60年了吸烟与肺癌间的联系。本周,说,住在高压电线附近的孩子得白血病的危险更大。