The Guideline Development Group would like to thank Nancy Turnbull and all other project team members of the National Collaborating Centre for Primary Care involved with this project. Additionally, thank you to Colette Marshall and all others involved at NICE for their continued support and advice throughout the development of the guideline.

The Project Team would like to thank Dr Ivan Cox, chairman of the guideline group, for his skilled leadership, and all the co-optees who had an essential role in providing the group with expert advice. We thank Ms Cluley for her organisational support.