Diagnostic performance of serum pentraxin-3 in pediatric acute appendicitis: a prospective diagnostic validation study.

"Declarations Conflict of interestThe authors declare that they have no conflict of interest. Ethical approvalThe ethics committee for clinical research of the Complejo Hospitalario de Navarra (CHN, Pamplona, Spain) assessed this project under registration code PI_2020/112 and approved it on December 18, 2020. Informed consentPrior to inclusion in this study, all the legal guardians of the patients involved in the study gave their verbal and written consent by means of an informed consent form. Conflict of interest The authors declare that they have no conflict of interest."

"Funding Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This study has not received external funding. None of the authors have financial disclosures to declare."

"Declarations: Conflict of interestThe authors declare that they have no conflict of interest.: Ethical approvalThe ethics committee for clinical research of the Complejo Hospitalario de Navarra (CHN, Pamplona, Spain) assessed this project under registration code PI_2020/112 and approved it on December 18, 2020.: Informed consentPrior to inclusion in this study, all the legal guardians of the patients involved in the study gave their verbal and written consent by means of an informed consent form. Ethical approval: The ethics committee for clinical research of the Complejo Hospitalario de Navarra (CHN, Pamplona, Spain) assessed this project under registration code PI_2020/112 and approved it on December 18, 2020."