Acute effects of particulate matter and black carbon from seasonal fires on peak expiratory flow of schollchildren in the brazilian amazon - Jacobson, Ludmilla da Silva Viana; Hacon, Sandra de Souza; Castro, Hermano Albuquerque de; Ignotti, Eliane; Artaxo Netto, Paulo Eduardo; Saldiva, Paulo Hilário Nascimento; Ponce de Leon, Antonio Carlos Monteiro (Plos One, 2014)