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平台:
CINAHL Basic
(Available from 1996/03/29.)
EBSCOhost Academic Search Complete
(Available from 1996/07/05.)
EBSCOhost Health Policy Reference Center
(Available from 1996/07/05.)
EBSCOhost STM Source
(Available from 1996/07/05.)
JSTOR Arts and Sciences X
(Available from 1976/03/19 volume: 25 issue: 10. Most recent 4 year(s) not available.)
ProQuest Agricultural & Environmental Science Database
(Available from 1998/01/01.)
ProQuest SciTech Premium Collection
(Available from 1998/01/01.)
PubMed Central Open Access
(Available from 2013 volume: 62.)