@article{Wang2017, author = "Fang Wang and Xingxiang Xu and Junjun Yang and Lingfeng Min and Sudong Liang and Yong Chen", title = "{Flow diagram of the literature search.}", year = "2017", month = "9", url = "https://plos.figshare.com/articles/figure/Flow_diagram_of_the_literature_search_/5444554", doi = "10.1371/journal.pone.0185316.g001" }