1. Department of Dermatology Hospital General Dr. Manuel Gea Gónzalez Mexico City Mexico
2. Department of Oncology Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas Mexico City Mexico
3. Department of Internal Medicine Fundación Clínica Médica Sur Mexico City Mexico
4. Department of Pathology Hospital General Dr. Manuel Gea Gónzalez Mexico City Mexico
5. School of Medicine Monterrey Institute of Technology and Higher Education Mexico City Mexico
6. Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas Mexico City Mexico