1. Facultad de Medicina y Hospital Universitario “Dr. José Eleuterio González”, Universiadad Autónoma de Nuevo León, Monterrey, Mexico
2. Department of Hematology, Instituto Nacional de Cinecias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
3. Department of Hematology, D’or Institute for Research and Education, São Paulo, Brazil
4. Facultad de Medicina de Ribeirāo Preto, Universidad de São Paulo, São Paulo, Brazil