Radiation Therapy Plus Fluorouracil With or Without Additional Chemotherapy in Treating Patients With Primary Anal Cancer

Northwick Park Hospital, Harrow

Ipswich Hospital, Ipswich

Cookridge Hospital, Leeds

Saint Bartholomew's Hospital, London

Cancer Research UK and University College London Cancer Trials Centre, London

James Cook University Hospital, Middlesbrough

Mount Vernon Cancer Centre at Mount Vernon Hospital, Northwood

Nottingham City Hospital, Nottingham

Royal Marsden - Surrey, Sutton

Southend University Hospital NHS Foundation Trust, Westcliff-on-Sea

Aberdeen Royal Infirmary, Aberdeen

Velindre Cancer Center at Velindre Hospital, Cardiff

Cancer Research Centre at Weston Park Hospital, Sheffield