Authors’ Contributions
Luojia Tang, Dong Pan and Chun Yang acquired the data. With the supervision of Xiaolei Lin, Yundi Hu performed the statistical analyses, produced the tables and figures. Luojia Tang and Yundi Hu wrote the first draft of the manuscript. Jianyong Gu and Min Min accessed and verified the underlying data.Cheng Tang and Yunchuan Huang consulted the literature. Xiaolei Lin and Chaoyang Tong were responsible for guidance and supervision.All authors contributed to revision of the manuscript, approved the final manuscript, and agreed to submit for publication.