1. Department of Epidemiology of Microbial Diseases, School of Public Health, Yale University, New Haven, Connecticut 06511, United States
2. Instituto de Saúde Coletiva, Universidade Federal da Bahia, Salvador, Bahia 40110-040, Brazil
3. Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Bahia 40296-710, Brazil
4. Centre for Health Informatics, Computing, and Statistics, Lancaster University Medical School, Lancaster LA1 4YW, United Kingdom
5. Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Bahia 40026-010, Brazil