BMJ. 1999 Jan 23;318(7178):215. doi: 10.1136/bmj.318.7178.215b.
BMJ (Clinical research ed.)
J Ciment
PMID: 9915724 PMCID: PMC1114719 DOI: 10.1136/bmj.318.7178.215b Free PMC Article
[No abstract available.]