Online Access
- DOAJ Directory of Open Access JournalsAvailable from 2013.
- ProQuest CentralAvailable from 01/01/2013 volume: 2013.
- PubMed CentralAvailable from 2013 volume: 2013.
- PubMed CentralAvailable from 2013 volume: 2013.
- Wiley Online Library JournalsAvailable from 01/01/2013 volume: 2013 issue: 1.
- Wiley Online Library Open AccessAvailable from 2013 volume: 2013 issue: 1.