John Richard BernardJohn David CreerHarry JacobsMorus Wyn Lloyd-OwenPaul Preston LockRobert Douglas McIntyreBMJ 1998; 317 doi: http://dx.doi.org/10.1136/bmj.317.7158.605 (Published 29 August 1998) Cite this as: BMJ 1998;317:605
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