Acute hepatitis C virus infection assessment among chronic hemodialysis patients in the Southwest Parana State, Brazil - Engel, Maricea; Malta, Fernanda M.; Gomes, Michele M. S.; Mello, Isabel M. V. G. C.; Pinho, João R. R.; Ono-Nita, Suzane K.; Carrilho, Flair J. (BMC Public Health, 2007)