“…Data analyses was performed by Microsoft Excel and Stata version 15 software (StataCorp, Texas, USA)(Stata including population characteristics (including total number of study subjects, age, sex and outcome i.e. mortality associated with SARS CoV-2 infection).The included studies were from China (n = 9) (Dai et al, 2020;He et al, 2020;Meng et al, 2020;Zhang H et al, 2020;Tian et al,2020), the United States (n = 5) (Kalinsky et al, 2020;Luo et al, 2020;Mehta et al, 2020;Robilotti et al, 2020;, Italy (n = 4) (Bogani et al, 2020;Fattizzo et al, 2020;Gallo et al, 2020;Stroppa et al, 2020), Spain (n = 2) (Rogado et al, 2020;Yarza et al, 2020), the United Kingdom (n =5) (Aries et al, 2020;Russell et al 2020;Shah et al, 2020;Shi et al, 2020;Lee et al, 2020), France (n = 2) (Basse et al, 2020;Vuagnat et al, 2020), Brazil (n=1) ( de Melo et al, 2020), Belgium (n = 1) ( Lattenist et al, 2020) , Russia (n=1) ( Moiseev et al, 2020) and one study from Europe included patients from 8 countries (Garassino et al, 2020). Recruitment in these 18 studies was from December 17 th 2019 to June17 th 2020.…”