Figure 5

Geographical spread of the studies included in the systematic map, showing the number of studies per country. Studies undertaken across more than one country are counted within each study country. Produced online at http://www.cartodb.com.
Geographical spread of the studies included in the systematic map, showing the number of studies per country. Studies undertaken across more than one country are counted within each study country. Produced online at http://www.cartodb.com.