NICE guidelines are developed in accordance with a scope that defines what the guideline will and will not cover. The scope of this guideline is available.
NICE commissioned the National Collaborating Centre for Primary Care (now the National Clinical Guideline Centre) to develop this guideline. The Centre established a Guideline Development Group (see appendix A), which reviewed the evidence and developed the recommendations. An independent Guideline Review Panel oversaw the development of the guideline (see appendix B).
There is more information about how NICE guidelines are developed on the NICE website.