London's health--going up in smoke?
D003695:Delivery of Health Care / Q000379:methods*; D006801:Humans; D008131:London / Q000453:epidemiology; D012907:Smoking / Q000453:epidemiology* / Q000331:legislation & jurisprudence; D016540:Smoking Cessation / Q000379:methods*; D000074606:Smoking Prevention; D014504:Urban Health / Q000331:legislation & jurisprudence*