Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13012-014-0156-2/MediaObjects/13012_2014_Article_156_Fig1_HTML.jpg)
Quasi-experimental study design, with 3 separate cross-sectional samples. One pre-intervention and two post-intervention samples at 12 and 24 months are conducted for the population-based household survey and the health center-based time-motion and patient surveys.