1. University of Central Lancashire; Department of Nursing; Room 434 Brook Building Preston Lancashire UK PR1 2HE
2. University of York; Department of Health Sciences; Seebohm Rowntree Building York North Yorkshire UK YO10 5DD
3. Newcastle University; Institute of Health and Society; 21 Claremont Place Newcastle upon Tyne Tyne and Wear UK NE2 4AA
4. University of Newcastle upon Tyne; Centre for Health Services Research; 21 Claremont Place Newcastle upon Tyne Tyne and Wear UK NE2 4AA