K. S. D. L. Sangineni, S. Salian, A. Waghray, S. Garre, R. K. P. Chikkala, and S. S. Ayya, “Labour analgesia: awareness and barriers among healthcare providers at a tertiary care centre”, Int J Res Med Sci, vol. 14, no. 3, pp. 892–896, Feb. 2026.