Patients with novel coronavirus infection who agreed to participate in this trial and signed the informed consent form. The diagnose criteria was according to Diagnostic and treatment protocol of COVID-19 pneumonia published by Chinese General Office of National Health Committee(6th and further edition).

Patients with novel coronavirus infection who agreed to participate in this trial and signed the informed consent form. The diagnose criteria was according to Diagnostic and treatment protocol of COVID-19 pneumonia published by Chinese General Office of National Health Committee(6th and further edition).