AUTHOR CONTRIBUTIONS
Hong Zhuang, LeiLei Sun, Xiaobo Wang and Min Xiao drafted the manuscript and communicated with the coauthors to coordinate the document editing. Hong Zhuang, LeiLei Sun, Long Zeng, Haoran Wang, Hongfu Yang and Feng Lin were responsible for sample collection. Xiaobo Wang and Min Xiao were responsible for sample detection, and sequence acquisition. Hong Zhuang, LeiLei Sun, Xiaobo Wang, Min Xiao, Chuang Wang, Liting Qin, and Chengbao Wang was responsible for data analysis and interpretation. Chuang Wang, Liting Qin and Chengbao Wang reviewed the manuscript and finalized it. All authors read and approved the final manuscript.