PAPERS AND SHORT REPORTS Non-smoking wives of heavy smokes have a higher risk of lung cancer: a study from Japan Takeshi Hirayama Abstract In a study in 29 health centre districts in Japan 91 540 non-smoking wises aged 40 and above were followed up for 14 years (1966-79), and standardised mortality rates for lung cancer were assessed according to the smoking habits of their husbands. Wives of heav