AUTHOR=Khalilian Mohammad Reza , Nasehi Mohammad Mehdi , Farahmandi Fargol , Farahmandi Farzaneh , Tahouri Tahmineh , Parhizgar Parynaz TITLE=Association of supine and upright blood pressure differences with head-up tilt test outcomes in children with vasovagal syncope JOURNAL=Frontiers in Pediatrics VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2025.1438400 DOI=10.3389/fped.2025.1438400 ISSN=2296-2360