[1] Richard Sullivan is at King's Health Partners Comprehensive Cancer Centre,
[2] and Institute of Cancer Policy,undefined
[3] King's College London,undefined
[4] Guy's Hospital Campus,undefined
[5] Great Maze Pond Road,undefined
[6] London SE1 9RT,undefined
[7] UK.,undefined
[8] Ajay Aggarwal is at London School of Hygiene and Tropical Medicine,undefined
[9] Keppel Street,undefined
[10] London WC1E 7HT,undefined
[11] UK,undefined
[12] and Institute of Cancer Policy,undefined
[13] King's College London,undefined
[14] Guy's Hospital Campus,undefined
[15] Great Maze Pond Road,undefined
[16] London SE1 9RT,undefined
[17] UK.,undefined