It is senior students, he says, that tend to engage in either habit
Cigarette smoking and mental illness: a study of nicotine withdrawal
We think we understand why
Most of the China Marines were withdrawn in November 1941, but the North China Marines in Peking and Tientsin were scheduled to be withdrawn on December 10. (All weapons and ammunition except rifles and pistols had been crated and shipped by rail to the embarkation port.) However, Imperial Japan attacked the United States on December 7, and the Marine Embassy guards, plus a fourteen man Naval medical detachment, a total of 203 men, were captured and held as slave labor until the war's end in August 1945. A 204th man, a retired officer who had been living in Peking and recalled to duty, was immediately released. He continued living in Peking until he was included in the roundup of civilians and sent to the Weihsien civilian internment camp in March 1943. He was returned to the states on the exchange ship Teia Maru in Sep 1943. The last commander of the China Marines was Colonel William W. Ashurst

In children, second-hand smoke is linked to ear infections, breathing problems and weakened immune systems
Accidental burns caused by the spattering of hot liquids or contact with hot objects are common in children, but there are characteristic features that are highly suggestive of abuse (Table 2)