Masroor, Rehan, Amjad Iqbal, Khalid Buland, and Waqas Ahmad Kazi. “Use of a Portable Oxygen Concentrator and Its Effect on the Overall Functionality of a Remote Field Medical Unit at 3650 Meters Elevation”. Anaesthesia, Pain & Intensive Care (January 30, 2019): 45-50. Accessed July 3, 2024. https://apicareonline.com/index.php/APIC/article/view/479.