+importFrom(MASS,ginv)
+importFrom(cowplot,background_grid)
+importFrom(ggplot2,aes)
+importFrom(ggplot2,geom_boxplot)
+importFrom(ggplot2,geom_line)
+importFrom(ggplot2,geom_tile)
+importFrom(ggplot2,ggplot)
+importFrom(ggplot2,ggtitle)
+importFrom(ggplot2,scale_fill_gradient2)
+importFrom(ggplot2,theme)
+importFrom(parallel,clusterExport)
+importFrom(parallel,makeCluster)
+importFrom(parallel,parLapply)
+importFrom(parallel,stopCluster)
+importFrom(reshape2,melt)