Solan, Shweta, Manoja Kumar Muni, and Sudeepa Das. “Sacral Hiatus Anatomical Variations and Clinical Relevance in Caudal Epidural Block”. International journal of health sciences 6, no. S8 (September 23, 2022): 3750–3757. Accessed November 16, 2024. https://sciencescholar.us/journal/index.php/ijhs/article/view/12945.