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Bibliography:istex:A0EF1C943FEEC76B446D215548181498E513217C
PMID:5066664
local:bmj;1/5796/368
href:bmj-1-368.pdf
ark:/67375/NVC-WJSXSG0K-5
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0007-1447
1468-5833
DOI:10.1136/bmj.1.5796.368