Assessing the infection risk of Giardia and Cryptosporidium in public drinking water delivered by surface water systems in Sao Paulo State, Brazil - Sato, Maria Inês Zanoli; Galvani, Ana Tereza; Padula, José Antonio; Nardocci, Adelaide Cassia; Lauretto, Marcelo de Souza; Razzolini, Maria Tereza Pepe; Hachich, Elayse Maria (Science of The Total Environment, 2013)