Imaging in pediatric appendicitis is key to a low normal appendix percentage: a national audit on the outcome of appendectomy for appendicitis in children - Bolmers, M D; van Rossem, C C; Gorter, R R; Bemelman, W A; van Geloven, A AW; Heij, H A (Pediatr Surg Int, 2018)
; Snapshot Appendicitis Collaborative Study group.