Goldacre M J, Kurina L M, Seagroatt V, Yeates D
Unit of Health-Care Epidemiology, Department of Public Health, University of Oxford, Institute of Health Sciences, Old Road, Oxford OX3 7LF, UK.
J Epidemiol Community Health. 2001 May;55(5):336-7. doi: 10.1136/jech.55.5.336.