“…Our search identified 39 studies reporting on the surgical management of PSI. This included three systematic reviews, 9–11 27 retrospective case series 13,15–19,21–24,27–31,34,35,37,42–44,47–50,53,56 and nine retrospective cohort studies 58,61,64,65,71,72,74,76,96 (see Supplementary Table 8).…”