AUTHOR=Song Kaihua , Cheng Jiayue , Wang Yuming , Shen Yang , Jiang Chenxin , Hong Shouhai TITLE=Umbilical acupuncture combined with warm needle acupuncture for the treatment of residual numbness after lumbar disc herniation surgery: a protocol of a randomized controlled trial JOURNAL=Frontiers in Neurology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2025.1528411 DOI=10.3389/fneur.2025.1528411 ISSN=1664-2295