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(5):307-314. doi:10.47750/jptcp.2023.30.05.031