Treatment options for patients with pilonidal sinus disease: PITSTOP, a mixed-methods evaluation oleh Steven Brown, Daniel Hind, Emily Strong, Mike Bradburn, Farhat Vanessa Nasim Din, Ellen Lee, Matthew J Lee, Jonathan Lund, Christine Moffatt, Jonathan Morton, Asha Senapati, Philip Shackley, Peter Vaughan-Shaw, Arkadiusz Peter Wysocki, Tia Callaghan, Helen Jones, Nyantara Wickramasekera