AUTHOR=Qu Wei , Wang Xuyi , Dong Chongyang , Zhang Tao , Yin Shugui , Sun Zhijun , Wang Shiqiang , Guo Anni , Hao Wei 

TITLE=Evaluating the antagonist effect of naltrexone implant via opioid challenge tests with escalating doses of hydromorphone injection in former heroin dependent patients

JOURNAL=Frontiers in Psychiatry

VOLUME=16

YEAR=2025

URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2025.1441598

DOI=10.3389/fpsyt.2025.1441598

ISSN=1664-0640