Doctor's shock at four-year old smoker September 30th, 2009 ANANOVA A Chinese doctor has spoken of his shock to discover that a four-year-old boy is already a heavy smoker. Dong Dong, of Banqiao village, near Feidong town in eastern China's Anhui province, has reportedly been smoking since he was just two. His family, who run a grocery store, say they have been unable to stop him from