平台:
EBSCOhost Academic Search Complete
(Available from 2009/06/01 until 2009/06/30.)
EBSCOhost STM Source
(Available from 2009/06/01 until 2009/06/30.)
PubMed Central Open Access
(Available from 2009 volume: 1 until 2009 volume: 1.)
EBSCOhost Academic Search Complete
(Available from 2009/06/01 until 2009/06/30.)
EBSCOhost STM Source
(Available from 2009/06/01 until 2009/06/30.)
PubMed Central Open Access
(Available from 2009 volume: 1 until 2009 volume: 1.)