Parole chiave: inquinamento atmosferico, fumo di tabacco, fumo passivo, nascita pretermine, peso neonatale, legislazione, air pollution, tobacco smoke pollution, second hand smoke, preterm birth, birth weight, legislation

Bibliografia:
Effect of smoke-free legislation on perinatal and child health: a systematic review and meta-analysis. Dr Jasper V Been et al, The Lancet, vol. 383 No. 9928 pp 1549-1560