BMJ. 1995 May 06;310(6988):1151-2. doi: 10.1136/bmj.310.6988.1151.
BMJ (Clinical research ed.)
I Smith
PMID: 7767136 PMCID: PMC2549550 DOI: 10.1136/bmj.310.6988.1151 Free PMC Article
[No abstract available.]