Hamid, Kamalipour, Lahsaee Masoud, Foroutan Hamid Reza, Ghoreishi Mehran, and Kamali Karmella. 2019. “Comparison of Different Non-Pharmacological Preoperative Preparations on Gastric Fluid Volume and Acidity: A Randomized Controlled Trial”. Anaesthesia, Pain & Intensive Care, February, 165-68. https://apicareonline.com/index.php/APIC/article/view/510.