exportPattern("^[[:alpha:]]+")
importFrom("grDevices", "dev.off", "png")
importFrom("graphics", "hist", "layout", "lcm", "lines", "par", "plot", "points", "segments", "text")
importFrom("stats", "lm", "median", "quantile", "sd", "terms", "wilcox.test")
importFrom("utils", "read.table", "write.table")
