BMJ. 2001 Dec 22-29;323(7327):1462-3. doi: 10.1136/bmj.323.7327.1462.
BMJ (Clinical research ed.)
A S David
PMID: 11751356 PMCID: PMC61050 DOI: 10.1136/bmj.323.7327.1462
[No abstract available.]