Background To systematically review clinical and biochemical characteristics associated
with the severity of the novel severe acute respiratory syndrome coronavirus 2 (SARS‐CoV …

Objective We aimed to systematically identify the possible risk factors responsible for severe
cases. Methods We searched PubMed, Embase, Web of science and Cochrane Library for …

Objective We aimed to investigate the relationship between clinical characteristics,
outcomes and the severity of severe acute respiratory syndrome coronavirus 2 pneumonia …

Background: COVID-19 is a new disease which has become a global pandemic, and is
caused by a novel coronavirus, SARS-CoV-2. The disease is still not very well …

Abstract Background Recently, Coronavirus Disease 2019 (COVID-19) outbreak started in
Wuhan, China. Although the clinical features of COVID-19 have been reported previously …

Our study aimed to systematically analyse the risk factors of coronavirus disease 2019
(COVID-19) patients with severe disease. An electronic search in eight databases to identify …

The global pandemic of novel coronavirus disease 2019 (COVID-19) has become an
emergency of major international concern. We aim to assess the prevalence of clinical …

Background In March 2020, the COVID-19 outbreak was declared a pandemic by the World
Health Organization. Aim Our objective was to identify risk factors predictive of severe …

Since December 2019, the pneumonia cases infected with 2019 novel coronavirus have
appeared, posing a critical threat to global health. In this study, we performed a meta …

Background 2019 novel coronavirus disease (COVID-19) has posed significant threats to
public health. To identify and treat the severe and critical patients with COVID-19 is the key …