1. Department of Internal Medicine Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Mexico City Mexico
2. Department of Biostatistics University of Washington Seattle WA USA
3. Department of Hematology and Oncology Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Mexico City Mexico
4. Department of Dermatology Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Mexico City Mexico
5. Division of Medical Oncology Department of Medicine University of Colorado Anschutz Medical Campus Aurora CO USA