1. St Thomas' Hospital; Clinical Oncology; London UK
2. Velindre Hospital NHS Trust; Oncology Department; Velindre Road Cardiff South Glamorgan UK CF4 7XL
3. Cardiff University; Cancer Research Wales Library; Velindre Cancer Centre Whitchurch Cardiff UK CF14 2TL
4. National Institute for Health and Clinical Excellence; Centre for Clinical Practice; MidCity Place 71 High Holborn London UK WC1V 6NA