“…Eleven studies reported on baseline oxygenation indicators of patients [10,13,26,27,29,30,32,35,37,38,40]. General symptoms such as fever, cough, and dyspnea were reported in 16 studies [10,12,13,23,24,27,29,[32][33][34][35][36][37][38][39][40], and lung imaging evaluation showed COVID-19 related pneumonia in 15 studies [10,12,23,25,27,29,[32][33][34][35][36][37][38][39][40].…”