Funding for this research was provided by:
Health Science Promotion Project of Beijing (2020-TG-001)
Hebei Provincial People's Livelihood Science and technology project: the Pathological Characteristics and Pathogenesis of COVID-19 (20277716D)
Received: 29 May 2020
Accepted: 5 October 2020
First Online: 14 October 2020
Ethics approval and consent to participate
: This study has been approved by the ethics committee of Affiliated Hospital of Hebei University, and the legal guardians of all patients have provided signed informed consent to participate.
: The patients agreed to publish their images and other data with anonymity.
: The authors declare that they have no competing interests in this section.