Online Access
- BioMed Central Journals CompleteAvailable from 12/01/2002 volume: 1 issue: 1.
- DOAJ Directory of Open Access JournalsAvailable from 2002.
- EBSCOhost Academic Search UltimateAvailable from 01/01/2002.
- Nexis UniAvailable from 06/28/2023.
- ProQuest CentralAvailable from 01/01/2009 volume: 8.
- PubMed CentralAvailable from 2002 volume: 1.
- Springer Nature OA Free JournalsAvailable from 12/01/2002 volume: 1 issue: 1.