Barzegari, H., A. Forouzan, M. A. Fahimi, B. Zohrevandi, and M. Ghanavati. “Proper Angle of Sono-Guided Central Venous Line Insertion; A Brief Report”. Archives of Academic Emergency Medicine, vol. 4, no. 3, Dec. 2018, pp. 155-8, doi:10.22037/aaem.v4i3.241.