1.
A comparative and retrospective study on the efficacy of caudal epidural steroid injection plus ganglion impar block versus ganglion impar block in patients with coccydynia. Ann Med Res . 2022;29(12):1413-1417. Accessed March 10, 2026. http://www.annalsmedres.org/index.php/aomr/article/view/4177