Article · Journal · 1974
H.C. Whittle, L J Egler, Peter Tugwell, Brian Greenwood
The Lancet
Go to the publisher10.1016/s0140-6736(74)91943-6
as printed: H.C Whittle
as printed: L.J Egler
as printed: P Tugwell
as printed: B.M Greenwood
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