AUTHOR=Chen Xinqi , Huang Yisen , Xu Qiaoli , Zhang Bifeng , Wang Yubin , Huang Meixue TITLE=C-reactive protein to serum calcium ratio as a novel biomarker for predicting severity in acute pancreatitis: a retrospective cross-sectional study JOURNAL=Frontiers in Medicine VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2025.1506543 DOI=10.3389/fmed.2025.1506543 ISSN=2296-858X