Search methods
| Electronic searches | MEDLINE (PubMed) |
| PsychINFO | |
| CINAHAL | |
| Cochrane Library | |
| Global Health Library Relevant reports from: | |
| WHO | |
| CDSR/DARE database | |
| United Nations of Children Education Fund | |
| (UNICEF) and other organisation will also be assessed |
CDSR, database of systematic reviews; DARE, database of abstracts of reviews of effects; UNICEF, United Nations of Children Education Fund.