id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-260114-tkh93k1u	Zhao, Qianwen	The impact of COPD and smoking history on the severity of COVID‐19: A systemic review and meta‐analysis	2020-05-17		.txt	text/plain	969	67	54	This meta‐analysis aimed to explore the risk of severe COVID‐19 in patients with pre‐existing chronic obstructive pulmonary disease (COPD) and ongoing smoking history. The heterogeneity of included studies was moderate for both COPD and ongoing smoking history on the severity of COVID‐19. Microsoft Excel database was created to record the available information including baseline details and the rate of development of severe COVID-19 in patients with different respiratory conditions. As the reported endpoints varied between including literatures, a subgroup analysis was performed to find out the impact of different endpoints on the effect of COPD or smoking on COVID-19. Imaging and clinical features of patients with 2019 novel coronavirus SAR-CoV-2: a systematic review and meta-analysis Clinical characteristics of 138 hospitalized patients with 2019 novel coronavirus-infected pneumonia in Wuhan Retrospective study on the epidemiological characteristics of 139 patients with novel coronavirus pneumonia on the effects of severity	./cache/cord-260114-tkh93k1u.txt	./txt/cord-260114-tkh93k1u.txt