1. St George's, University of London; Population Health Sciences and Education; Cranmer Terrace London UK SW17 0RE
2. Clinical Trials Unit; Medical Research Unit; Other Diseases Group 222 Euston Road London UK NW1 2DA
3. King's College London; Florence Nightingale School of Nursing and Midwifery; 2.25, James Clerk Maxwell Building 57 Waterloo Road London UK SE1 8WA