•
平台:
BMJ Journals
(Available from 2007.)
BMJ Journals Archive
(Available from 1947 volume: 1 issue: 1 until 2006.)
JSTOR Life Sciences Collection
(Available from 1979/06/01 volume: 33 issue: 2. Most recent 4 year(s) not available.)
ProQuest Biological Science Database
(Available from 1979/06/01 volume: 33 issue: 2. Most recent 6 month(s) not available.)
ProQuest SciTech Premium Collection
(Available from 1979/06/01 volume: 33 issue: 2. Most recent 6 month(s) not available.)
PubMed Central
(Available from 1979 volume: 33 until 2007 volume: 61 issue: 12.)