Authors’ contributions
Ya-sen Wang and Wei Shen conceptualized and designed the study, drafted the initial manuscript,and approved the final manuscript as submitted. Xin-zhu Lin, Jian Mao, Xiao-mei Tong, Zhan-kui Li and Fan Wu conceptualized and designed the study, conducted data analysis, drafted the initial manuscript. Qing Yang, Rong Lin, Li-xia Tang, Rui-miao Bai, Dong Yang, Juan Zhang, Yi-jia Zhang, Wen-ting Yu, Shi-rong Song, Juan Kong, Si-yu Song participated in data collection and sorting, and reviewed and revised the manuscript. Xin-zhu Lin prepared the data and initial analysis, critically reviewed the manuscript and approved the final manuscript as submitted. All the authors have read and approved the manuscript.