vered and were discharged, while four patients did not survive. Table 1a Clinical characteristics of COVID-19 patients. No. (%) Total (n = 21) Survival (n = 17) Non-survival (n = 4) Age, mean (s.d.) 62.5 (12.6) 61.5 (9.5) 79.7 (14.3)⁎ Male 11 (52.3