The impact of sugar cane-burning emissions on the respiratory system of children and the elderly - Cançado, José Eduardo Delfini; Saldiva, Paulo Hilário Nascimento; Pereira, Luiz A A; Lara, Luciene B L S; Artaxo Netto, Paulo Eduardo; Martinelli, Luiz Antonio; Arbex, Marcos Abdo; Zanobetti, Antonella; Braga, Alfesio L F (Environmental Health Perspectives, 2006)