Consent for publication
Not applicable.
Author Contributions
XS and BM conceptualized and designed the study. XS wrote the R script and make the R package. XS ran the test data and improved the As database and R package. Yl and KZ provided a part of the R code. BW, YZ and YL provided some ideas to construction the As database. XS, ES and BM wrote the manuscript, and all authors contributed and approved the final edition of the manuscript.