Department of Sociological Studies, University of Sheffield, Elmfield, Northumberland Road, Sheffield, S10 2TU, UK. A.J.Bartlett@sheffield.ac.uk.|Department of Health, Ethics & Society, Care and Public Health Research Institute (Caphri), Maastricht University, PO Box 616, Maastricht, 6200MD, the Netherlands.|School of Social Sciences, Cardiff University, Glamorgan Building, King Edward VII Avenue, Cardiff, CF10 3WT, UK.