Mosaffa, F. et al. 2023. The Effect of Intravenous Metoclopramide on Gastric Emptying of Opium-dependent Patients based on Ultrasonographic Criteria; a Case-control Study . Archives of Academic Emergency Medicine. 11, 1 (Jan. 2023), e6. DOI:https://doi.org/10.22037/aaem.v11i1.1892.