AUTHOR=Zhao Yanping , Liu Lin , Hou Yi , Fan Jiaming TITLE=Effects of esketamine–sufentanil for patient-controlled intravenous analgesia in women following cesarean section: A randomized clinical trial JOURNAL=Frontiers in Pharmacology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2025.1579633 DOI=10.3389/fphar.2025.1579633 ISSN=1663-9812