Masoumi, Babak, et al. “The Role of Cardiac Arrest Sonographic Exam (CASE) in Predicting the Outcome of Cardiopulmonary Resuscitation; A Cross-Sectional Study: Cardiac Arrest Sonographic Exam”. Archives of Academic Emergency Medicine, vol. 9, no. 1, June 2021, p. e48, doi:10.22037/aaem.v9i1.1272.