- Correspondence to Dr Iná S Santos, Post-graduate Program in Epidemiology, Department of Social Medicine, Faculty of Medicine, Federal University of Pelotas, Rua Marechal Deodoro 1160, 3o piso, Pelotas, RS 96020-220, Brazil;
- Received June 20, 2014
- Revised November 25, 2014
- Accepted February 3, 2015
- First published February 19, 2015.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.