Potential benefits of precise corticosteroids therapy for severe 2019-nCoV pneumonia Dear Editor, Since last December, the outbreak of 2019-nCoV in Wuhan has caused ever-increasing attention and public panic all over the world. Up to February 9, 2020, 40,171 patients had been diagnosed with 2019-nCoV infection, including 6484 (16.14%) severe cases and 908 deaths (2.27%). Compared to SARS and MERS, 2019-nCoV appears to be much more contagious but less lethal, as most patients have mild symptoms and good prognosis1,2. Howe