More Information
Bibliography:istex:958ECA8DFBFC27E3FC0D118F30E24D9269E4ADFC
ark:/67375/NVC-C8DRJ961-Z
href:bmj-2-281.pdf
PMID:14160210
local:bmj;2/5404/281
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0007-1447
1468-5833
DOI:10.1136/bmj.2.5404.281