oxygenation, length of hospital stay (days), time to 2019‐nCoV RT‐PCR, change (reduction) in 2019‐nCoV viral load in upper and lower respiratory tract specimens as assessed by area under viral load curve, frequency of serious adverse drug events, Serum TNF‐α, IL‐1β, IL‐2, IL‐6, IL‐7, IL‐10, GSCF, IP10#MCP1, MIP1α, and other