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平台:
BMJ Journals
(Available from 2007.)
BMJ Journals Archive
(Available from 1998 volume: 1 issue: 1 until 2006.)
Ovid Journals - AutoHoldings
(Available from 1998/02/01 volume: 1 issue: 1 until 2022/11/30 volume: 25 issue: 4.)
PubMed Central
(Available from 2015 volume: 18 until 2022 volume: 25.)