Rapid responses are electronic letters to the editor. They enable our users to debate issues raised in articles published on thebmj.com. Although a selection of rapid responses will be included online and in print as readers' letters, their first appearance online means that they are published articles. If you need the url (web address) of an individual response, perhaps for citation purposes, simply click on the response headline and copy the url from the browser window. Letters are indexed in PubMed.
X.C. and Y.H. contributed equally to this work, as did Z.Y. and L.C.
And the Acknowledgments should have been included.
We thank Dr. James Morris of Clemson University for critical reading of the manuscript. This work was supported by the National Science Foundation of China (U1202226 and 31260508 to ZY, 31260264 to HY), the Yunnan Provincial Project (2013HA026 to LC), and the National Institutes of Health (U19 AI089672 to LC).
No competing interests
09 November 2017
Xi Chen, Yongshu He, Yinglei Miao, Zhaoqing Yang, Liwang Cui
Department of pathogen biology and immunology, Kunming Medical University, Kunming, Yunnan, China