Dr. Israel Morales Garcia and Dr. Gibran Guadalupe Sanchez Salas 2023. Control of Acute Pain in a Patient with Acute Chronic Low Back Pain by Using Ecoguided Facetary Analgesic Blockin the Emergency Room, Report of Two Cases. International Journal of Medical Science and Clinical Research Studies . 3, 11 (Nov. 2023), 2554–2557. DOI:https://doi.org/10.47191/ijmscrs/v3-i11-01.