Br Med J (Clin Res Ed). 1986 Apr 26;292(6528):1150. doi: 10.1136/bmj.292.6528.1150.
British medical journal (Clinical research ed.)
P Johnston
PMID: 20742643 PMCID: PMC1340094 DOI: 10.1136/bmj.292.6528.1150
[No abstract available.]