Correction: Arginase Activity in the Blood of Patients with Visceral Leishmaniasis and HIV Infection. - Yegnasew Takele; Tamrat Abebe; Teklu Weldegebreal; Asrat Hailu; Workagegnehu Hailu; Zewdu Hurissa; Jemal Ali; Ermiyas Diro; Yifru Sisay; Tom Cloke; Manuel Modolell; Markus Munder; et al. (Public Library of Science (PLoS), 2013)