According to WHO, there are now over a billion smokers in the world, and some four million deaths a year can be attributed to tobacco This figure is expected to rise to about 10 million over the next 20 to 30 years
आणि पुढच्या २० ते ३० वर्षांच्या काळात ही संख्या एक कोटीच्या घरात जाण्याची शक्यता व्यक्‍त केली जाते.