Funding for this research was provided by:
National Natural Science Foundation of China (81770276, 81571871)
Novel coronavirus pneumonia emergency treatment and diagnosis technology research project of Heilongjiang provincial science and Technology Department
Accepted: 18 April 2020
First Online: 8 May 2020
Compliance with ethical standards
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
Free to read: This content has been made available to all.