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平台:
EBSCOhost Academic Search Complete
(Available from 2003/01/01 until 2007/01/31.)
EBSCOhost STM Source
(Available from 2003/01/01 until 2007/01/31.)
ProQuest Biological Science Database
(Available from 2005/11/25 volume: 3 until 2005/11/25 volume: 3.)
ProQuest SciTech Premium Collection
(Available from 2005/11/25 until 2005/11/25.)
PubMed Central Open Access
(Available from 2003 volume: 1 until 2007 volume: 5.)
SpringerLink Open Access
(Available from 2003/12/01 volume: 1 issue: 1 until 2007/12/31 volume: 5 issue: 1.)