50.（In the United States, forinstance, the mortality rate for lung cancer among female non-smokers has notchanged during the past 20 years. During the same period the rate among femalesmokers has increased by a factor of half.）In South-East Asia, more tha
50.（In the United States, forinstance, the mortality rate for lung cancer among female non-smokers has notchanged during the past 20 years. During the same period the rate among femalesmokers has increased by a factor of half.）In South-East Asia, more than 85 percent oforal cancer cases in women are caused by tobacco habits.
