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 8 sources, which was discussed by the committee. The evidence included 3 systematic reviews, 2 registry analyses, 1 propensity score weighted study, 1 retrospective case series and 1 retrospective cohort study. It is presented in the summary of key evidence section in the overview. Other relevant literature is in the appendix of the overview.