Affiliation: | 1. Epidemiology and Health Services Research Unit CMN Siglo XXI, Mexican Institute of Social Security, Av. Cuahutemoc 330, Col. Doctores. Del. Cuahutemoc, 06720, Mexico City, Mexico 2. Facultad de Medicina, Departamento de Farmacología de la Facultad de Medicina Universidad Nacional Autónoma de México, Mexico City, Mexico 3. Hospital de Oncología, CMN Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico 4. Instituto de Investigaciones Sociales, Universidad Nacional Autónoma de México, Mexico City, Mexico 5. Division of Social Protection and Health, Inter-American Development Bank, Mexico City, Mexico
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