Anthony, Mina, et al. “The Safe and Effective Use of Lumbar Epidural for the Surgical Management of a Femoral Neck Fracture in a Patient With Progressed Amyotrophic Lateral Sclerosis (ALS): A Case Report”. International Journal of Innovative Research in Medical Science, vol. 4, no. 12, Dec. 2019, p. 685 to 687, doi:10.23958/ijirms/vol04-i12/783.