Non-Detection of Human Herpesvirus 8 (HHV-8) DNA in HHV-8-Seropositive Blood Donors from Three Brazilian Regions - Levi, José Eduardo; Nascimento, Maria Claudia; Sumita, Laura Masami; Souza, Vanda Akico Ueda Fick de; Freire, Wilton S.; Mayaud, Philippe; Pannuti, Claudio S. (PLOS ONE, 2011)