AUTHOR=He Junchen , Huang Rong , Liu Yingzhu , Chen Ying , Zhong Min 

TITLE=Global research frontiers and thematic trends in opioid-free anesthesia over the past 20 years: a bibliometric analysis

JOURNAL=Frontiers in Pharmacology

VOLUME=16

YEAR=2025

URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2025.1562765

DOI=10.3389/fphar.2025.1562765

ISSN=1663-9812