Repeated intrathecal injections of peripheral nerve-derived stem cell spheroids improve outcomes in a rat model of traumatic brain injury. - Shin, Hae Eun; Lee, Won-Jin; Park, Kwang-Sook; Yu, Yerin; Kim, Gyubin; Roh, Eun Ji; Song, Byeong Gwan; Jung, Joon-Hyuk; Cho, Kwangrae; Ha, Young-hu; Yang, Young-Il; Han, Inbo (Stem Cell Research & Therapy, 2024)