Structural changes of the multifidus in animal models of intervertebral disk degeneration: a systematic review - Wang, Yaobin; Zhao, Xinghua; Zhang, Xiangyu; Yang, Yuhua; Zhang, Weikang; Liu, Shaocheng; Liu, Zhenlei; Zhang, Lei; Wang, Kai; Wu, Hao (Frontiers in Surgery, 2024)