1. Instituto de Inmunología, Universidad del Valle, Cali, Colombia; Malaria Vaccine and Drug Development Center, Cali, Colombia; Fundación Clínica Valle del Lili, Cali, Colombia; Division of Infectious Diseases, Federal University of Sao Paulo, Sao Paulo, Brazil; Family Health International, Durham, North Caarolina; Biochemistry Institute, University of Lausanne, Lausanne, Switzerland