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平台:
DOAJ Directory of Open Access Journals
(Available from 2014.)
EBSCOhost Health Policy Reference Center
(Available from 2007/03/01 until 2016/01/31.)
JSTOR Arts and Sciences X
(Available from 2014/01/01 volume: 51 issue: 1 until 2020/01/31 volume: 57. Available from 1963/08/01 volume: 1 issue: 1 until 2013/11/30 volume: 50 issue: 4.)
PubMed Central Open Access
(Available from 2014 volume: 51.)
SAGE Open Access Journals
(Available from 2001/02/01 volume: 38 issue: 1.)