oaDOI/unpaywall (OA fulltext)
Crossref Metadata (via API)
Worldcat
SHERPA/RoMEO (journal policies)
wikidata.org
CORE.ac.uk
Semantic Scholar
Google Scholar
Corrigendum
release_z3grf64fgjdi3a5qlc7ssggwye
Archived Files and Locations
application/pdf
273.1 kB
file_a6n6uyy7efdt5lres7ymeljmcq
|
web.archive.org (webarchive) www.bmj.com (web) |
Read Archived PDF
Preserved and Accessible
Work Entity
access all versions, variants, and formats of this works (eg, pre-prints)
access all versions, variants, and formats of this works (eg, pre-prints)
Lookup Links