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平台:
DOAJ Directory of Open Access Journals
(Available from 2003.)
ProQuest Biological Science Database
(Available from 2012/01/01. Available from 1998/09/01 until 2005/12/31.)
ProQuest SciTech Premium Collection
(Available from 2012/01/01. Available from 1998/09/01 until 2005/12/31.)
PubMed Central
(Available from 2015 volume: 82.)