1. Research and Development Department, Ezequiel Dias Foundation 30510-010, Brazil
2. Department of Community Health, National University, SanDiego, CA 92037, USA
3. Faculty of Ceilandia, Public Health, University of Brasilia, Brasilia 72220-275, Brazil
4. Women in Informal Employment: Globalizing and Organizing (WIEGO), M2 7EN, UK