Authors: Julián E García-Rejón; María Alba Loroño-Pino; José Arturo Farfán-Ale; Luis F Flores-Flores; Mildred P López-Uribe; Maria Del Rosario Najera-Vazquez; Guadalupe Nuñez-Ayala; Barry J Beaty; Lars Eisen Journal: Am J Trop Med Hyg Date: 2011-03 Impact factor: 2.345