被动吸烟、主动吸烟与乳腺癌的联系，1992年1月至1993年10月在瑞士日内瓦进行了一项基于全人群的病例对照研究。病例组是244名乳腺癌妇女，对照组是1032名健康妇女。记录是从10岁起到调查的这一年妇女一生中主动吸烟和被动吸烟的历史。与未暴露于主动吸烟和被动吸烟的妇女作比 The link between passive smoking, active smoking and breast cancer, a case-based, population-wide study was conducted in Geneva, Switzerland, from January 1992 to October 1993. The case group was 244 women with breast cancer and the control group was 1032 healthy women. The record is the history of active smoking and passive smoking in women’s lifetime from the age of 10 to the year of investigation. Compared with women who are not exposed to active smoking and passive smoking