Brain function assessment of acupuncture for chronic insomnia disorder with mild cognitive dysfunction based on fNIRS: protocol for a randomized controlled trial - Wang, Tianyu; Li, Zhi; Ma, Tingting; Zhu, Fengya; Yang, Bin; Kim, Sieun; Miao, Runqing; Wu, Jie (Frontiers in Neurology, 2024)