Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12888-014-0358-9/MediaObjects/12888_2014_Article_358_Fig1_HTML.jpg)
Review flowchart. Note: 1These publications refer to peer-reviewed publications that were identified through the in-country search and that did not come up in the online search of databases.
Review flowchart. Note: 1These publications refer to peer-reviewed publications that were identified through the in-country search and that did not come up in the online search of databases.