AUTHOR=Williams Elizabeth , Brice Syaribah N. , Price Dave TITLE=Mathematical methodology for defining a frequent attender within emergency departments JOURNAL=Frontiers in Disaster and Emergency Medicine VOLUME=3 YEAR=2025 URL=https://www.frontiersin.org/journals/disaster-and-emergency-medicine/articles/10.3389/femer.2025.1462764 DOI=10.3389/femer.2025.1462764 ISSN=2813-7302