Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Matsumoto Hiroaki and Matsumoto Atsushi and Miyata Shiro and Tomogane Yusuke and Minami Hiroaki and Masuda Atsushi and Yamaura Ikuya and Yoshida Yasuhisa and Hirata Yutaka,A very elderly patient with calcification of the ligamentum flavum in the lumbar spine showing progressive urinary retention after mild trauma,NEUROSURGICAL EMERGENCY,1342-6214,Japan Society of Neurosurgical Emergency,2023,28,1,40-45,https://cir.nii.ac.jp/crid/1390860476537003520,https://doi.org/10.24723/jsne.28.1_40