AUTHOR=Park Kyu Hee , Kim Eun Yeob , Cho Hye Won , Jung Jong Ki , Kim Yu Seon , Choi Byung Min TITLE=A decision tree analysis to predict massive pulmonary hemorrhage in extremely low birth weight infants: a nationwide large cohort database JOURNAL=Frontiers in Pediatrics VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2025.1529712 DOI=10.3389/fped.2025.1529712 ISSN=2296-2360