3.1
NICE did a rapid review of the published literature on the efficacy and safety of this procedure. This comprised a comprehensive literature search and detailed review of the evidence from 11 sources, which was discussed by the committee. The evidence included 1 systematic review, 1 randomised controlled trial, 1 non-randomised comparative study, 1 single-arm trial and 7 case series. It is presented in the summary of key evidence section in the overview. Other relevant literature is in the appendix of the overview.