Barzegari, Hassan, Arash Forouzan, Mohammad Ali Fahimi, Behzad Zohrevandi, and Mandana Ghanavati. 2018. “Proper Angle of Sono-Guided Central Venous Line Insertion; A Brief Report”. Archives of Academic Emergency Medicine 4 (3):155-58. https://doi.org/10.22037/aaem.v4i3.241.