平台:
DOAJ Directory of Open Access Journals
(Available from 2013 until 2019.)
PubMed Central Open Access
(Available from 2013 volume: 1 until 2018 volume: 6 issue: 1.)
DOAJ Directory of Open Access Journals
(Available from 2013 until 2019.)
PubMed Central Open Access
(Available from 2013 volume: 1 until 2018 volume: 6 issue: 1.)