1. From the HTA Unit, Inova Medical, Porto Alegre, Brazil
2. Post-Graduate Program of Epidemiology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
3. Faculty of Medical Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
4. Santa Casa de São Paulo, São Paulo, Brazil
5. Pfizer Brazil, São Paulo, Brazil
6. Pfizer Inc., Collegeville, Pennsylvania, USA
7. Pfizer Inc., New York, New York, USA