Br Heart J. 1971 Jan;33(1):167-8. doi: 10.1136/hrt.33.1.167.
British heart journal
M K Horne, D T Rowlands
PMID: 5541918 PMCID: PMC487160 DOI: 10.1136/hrt.33.1.167 Free PMC Article
[No abstract available.]