1. Pedro Kouri Institute of Tropical Medicine, Havana, Cuba.
2. pmasbe@infomed.sld.cu
3. Molecular Immunology Center, Havana, Cuba.
4. Ministry of Public Health, Havana, Cuba.
5. La Pradera International Health Center, Havana, Cuba.
6. National School of Public Health, Havana, Cuba.
7. National Medical Sciences Information Center, Havana, Cuba.
8. National Institute of Hygiene, Epidemiology, and Microbiology, Havana, Cuba.
9. Council of Ministers, Havana, Cuba.