V. De Sanctis, E. M. . Bedair, A. . T. Soliman, A. P. . Nair, M. A. . Al Masalamani, and M. . Yassin, “Proposed Scoring System for Evaluating Clinico-radiological Severity of COVID- 19 using Plain Chest X- ray (CXR) changes (CO X-RADS): Preliminary results: Scoring chest X-ray and Covid-19”, Acta Biomed, vol. 91, no. 4, p. e2020172, Nov. 2020.