S. Anjum, S. Singh, Z. Ali, S. Ubaid, S. Majid, and S. Y. Imtiyaz, “A comparative study of supraclavicular versus infraclavicular approach for central venous catheterization in neurosurgical patients”, Int J Res Med Sci, vol. 7, no. 9, pp. 3421–3425, Aug. 2019.