Correction: Factors Associated with Visceral Leishmaniasis in the Americas: A Systematic Review and Meta-Analysis. - Vinícius Silva Belo; Guilherme Loureiro Werneck; David Soeiro Barbosa; Taynãna César Simões; Bruno Warlley Leandro Nascimento; Eduardo Sérgio da Silva; Claudio José Struchiner (Public Library of Science (PLoS), 2013)