Ibrahim EL-Zoghby, Sara Aly, Shereen Elgengeehy, M. Hamed, Karim Mashhour. Lung ultrasound scoring system vs ROX index as a predictor for progression to the invasive mechanical ventilation in COVID-19 patients. J Popl Ther Clin Pharmacol. 2023;30(7):125-132. doi:10.47750/jptcp.2023.30.07.015