LONDON (Reuters) - Introducing laws banning smoking in enclosed public places can lead to swift and dramatic falls in the number of children admitted to hospital suffering asthma attacks, according to a study in England published on Monday. Researchers at Imperial College London found there was a 12.3 percent fall in hospital admissions for childhood asthma in the first year after laws against smoking in enclosed public places and workplaces came into effect in July 2007. ...