For example, a nonsmoker who is married to a smoker has a 30 - percent greater risk of developing lung cancer than if he or she were married to a nonsmoker.
થોડા વર્ષો અગાઉ, કોઈ પણ વ્યક્તિ ગમે ત્યાં ધૂમ્રપાન કરી શકતી હતી.