import(igraph)
importFrom("gtools","permutations","combinations")
importFrom("stats", "cor", "cor.test", "pchisq", "phyper","p.adjust")
importFrom("igraph","graph.edgelist","layout_in_circle","V<-","E<-","layout.circle","layout_on_grid","layout_as_star","layout_","degree","betweenness","transitivity","evcent","closeness","E","V","plot.igraph")
importFrom("grDevices", "dev.off", "pdf")
importFrom("graphics", "plot","legend", "par", "text")
importFrom("utils", "combn")
importFrom("survival","coxph","survfit","survdiff","Surv")
importFrom("parallel","makeCluster","detectCores",
"stopCluster","clusterApply")
exportPattern("^[[:alpha:]]+")

