Kaya SS, Akcaboy EY, Celik S, Goksu H, Baran M, Yildiz G, Ayhan MY, Sahin S. 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. annalsmedres [Internet]. 2022 Dec. 23 [cited 2024 May 17];29(12):1413-7. Available from: http://www.annalsmedres.org/index.php/aomr/article/view/4177