Correction to: European Journal of Trauma and Emergency Surgery https://doi.org/10.1007/s00068-022-02000-2

The article “Diagnostic performance of calprotectin and APPY‑1 test in pediatric acute appendicitis: a systematic review and a meta‑analysis“, written by Javier Arredondo Montero, Carlos Bardají Pascual, Giuseppa Antona, Mónica Bronte Anaut, Natalia López‑Andrés, Nerea Martín‑Calvo, was originally published online on the publisher’s internet portal on 28. May 2022 with Open Access under a “Creative Commons Attribution (CC BY) license 4.0”.

With the authors' decision to cancel Open Access the copyright of the article changed on 7. June 2022 to © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, 2022 with all rights reserved.