参考链接:
https://stat.ethz.ch/pipermail/bioconductor/2014-January/056992.html
http://home.52brain.com/forum.php?mod=viewthread&tid=27066&page=1#pid170857
http://www.mathworks.com/matlabcentral/answers/144113-mafdr-interpreting-q-values-vs-bhfdr-adjusted-p-values