About the Authors
Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
The authors have declared that no competing interests exist.
Analyzed the data: YX JZ BZ LL. Wrote the first draft of the manuscript: YX. Contributed to the writing of the manuscript: YX JZ BZ LZ SL LL. ICMJE criteria for authorship read and met: YX JZ BZ LZ SL LL. Agree with manuscript results and conclusions: YX JZ BZ LZ SL LL.