1. University of Birmingham; Birmingham Clinical Trials Unit; Robert Aitken Institute Edgbaston Birmingham UK B15 2TT
2. College of Medical and Dental Sciences; School of Clinical and Experimental Medicine; University of Birmingham Edgbaston Birmingham UK B15 2TT
3. University of Birmingham; Primary Care Clinical Sciences; Primary Care Clinical Sciences Building Edgbaston Birmingham UK B15 2TT
4. University of East Anglia; Edith Cavell Building; Colney Lane Norwich UK NR4 7UL
5. University of East Anglia; Faculty of Medicine and Health Sciences; Norwich UK
6. University of Birmingham; Cancer Research Clinical Trials Unit, School of Cancer Sciences; Edgbaston Birmingham UK B15 2TT