Strokes are more likely to occur if you smoke, the director of external affairs at Stroke Association has said, as Public Health England launches a new stop-smoking campaign to highlight the unseen harms on smokers' bodies.
Joe Korner added: "Stroke is a major cause of death and adult disability in the UK and you are twice as likely to have a stroke if you smoke. The more you smoke, the more your risk increases."
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Mr Kim has made two recent visits to China.
The study looked at the development of 422 children over the course of eight years.
The president said they will come into force if China refuses to change its practices.