Interrater reliability of clinical findings in children with possible appendicitis Pediatrics 2012;129(4):695–700 Kharbanda AB, Vazquez-Benitez G, Ballard DW, et al Development and validation of a novel pediatric Appendicitis Risk Calculator (pARC) Pediatrics 2018;141(4):e20172699 Lipsett SC, Bachur RG Current approach to the diagnosis and emergency department management of appendicitis in children Pediatr Emerg Care 2017;33(3):198–203 Mittal MK, Dayan PS, Macias CG, et al Pediatric Emergency Medicine Collaborative Research Committee of the American Academy of Pediatrics Performance of ultrasound in the diagnosis of appendicitis in children in a multicenter cohort Acad Emerg Med 2013;20(7):697–702 Stevenson MD, Dayan PS, Dudley NC, et al Time from emergency department evaluation to operation and appendiceal perforation Pediatrics 2017;139(6):e20160742 Intussusception Amuddhu SK, Chen Y, Nah SA Inpatient admission versus emergency department management of intussusception in children: a systemic review and meta-analysis of outcomes Eur J Pediatr Surg 2019;29(1):7–13 Applegate KE Intussusception in children: evidence-based diagnosis and treatment Pediatr Radiol 2009;39(2):S140–S143 Edwards EA, Pigg N, Courtier J, et al Intussusception: past, present and future Pediatr Radiol 2017;47(9):1101–1108 Fallon SC, Lopez ME, Zhang W, et al Risk factors for surgery in pediatric intussusception in the era of pneumatic reduction J Pediatr Surg 2013;48(5):1032–1036 Gray MP, Li SH, Hoffmann RG, et al Recurrence rates after intussusception enema reduction: a meta-analysis Pediatrics 2014;134(1):110–119 Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/24935997 Guo WL, Hu ZC, Tan YL, et al Risk factors for recurrent intussusception in children: a retrospective cohort study BMJ Open 2017;7(11):e018604 Kaiser AD, Applegate KE, Ladd AP Current success in the treatment of intussusception in children Surgery 2007;142(4):469–475; discussion 475– 477 Riera A, Hsiao AL, Langhan ML, et al Diagnosis of intussusception by physician novice sonographers in the emergency department Ann Emerg Med 2012;60(3):264–268