Subacute combined degeneration of the spinal cord caused by inhalation of nitrous oxide: two cases report
LIU Yu-lu, ZHUANG Sheng, CHEN Jing, LIU Chun-feng
Chinese Journal of Contemporary Neurology and Neurosurgery . 2019, (9): 693 -697 .  DOI: 10.3969/j.issn.1672-6731.2019.09.016