Lancet. 2001 Apr 21;357(9264):1287; author reply 1288. doi: 10.1016/S0140-6736(00)04424-X.
Lancet (London, England)
E M Berry
PMID: 11421207 DOI: 10.1016/S0140-6736(00)04424-X
[No abstract available.]