•
平台:
BioMed Central Open Access
(Available from 2004/12/01 volume: 6 issue: 3 until 2012/12/31 volume: 15 issue: 1.)
DOAJ Directory of Open Access Journals
(Available from 2004.)
EBSCOhost Academic Search Complete
(Available from 2010/01/01.)
EBSCOhost STM Source
(Available from 2010/01/01.)
Ovid Journals - AutoHoldings
(Available from 2004/07/01 volume: 6 issue: 1.)
SpringerLink Open Access
(Available from 2004/12/01 volume: 6 issue: 3 until 2012/12/31 volume: 15 issue: 1.)
Wiley Online Library - AutoHoldings Journals
(Available from 2004/07/01 volume: 6 issue: 1.)
Wiley Online Library Open Access
(Available from 2004 volume: 6 issue: 1.)