1 Facultad de Salud Pública, Universidade de São Paulo São Paulo Brazil Facultad de Salud Pública, Universidade de São Paulo, São Paulo, Brazil.
2 Cuban Medical Services Havana Cuba Cuban Medical Services, Havana, Cuba.
3 Pan American Health Organization Washington DC United States of America Pan American Health Organization, Washington, DC, United States of America.
4 Instituto de Higiene e Medicina Tropical Universidade Nova Lisbon Portugal Instituto de Higiene e Medicina Tropical, Universidade Nova, Lisbon, Portugal.
5 Imperial College London London England Imperial College London, London, England.
6 Pan American Health Organization Brasilia Brazil Pan American Health Organization, Brasilia, Brazil.
7 Nova Scotia Health Authority Halifax Canada Nova Scotia Health Authority, Halifax, Canada.
8 The University of the West Indies Mona Jamaica The University of the West Indies, Mona, Jamaic.
9 University of Exeter Exeter England University of Exeter, Exeter, England.