Crombie Iain K, Davies Huw T O, Macrae William A
Department of Epidemiology and Public Health, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, ScotlandUK Department of Anaesthetics, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, ScotlandUK.
Pain. 1994 Apr;57(1):1-3. doi: 10.1016/0304-3959(94)90102-3.