Hao W et al. Department of Respiratory Medicine, The Affiliated Hospital of Yan'an University, Yan'an (2020-03-13)
Dear Editor, At the end of December 2019, an outbreak of unexplained pneumonia in Wuhan [1,2] was caused by Severe Acute Respiratory Syndrome Coronavirus −2 (SARS-CoV-2) infection named Coronavirus Disease-19 (COVID-19). ...