Tree structure where each of the stages of the disease has been clustered in a single cluster using the RFE_clust_Dunn algorithm to select the variables used as input in pvclust [43] used to perform hierarchical clustering.

<p>Tree structure where each of the stages of the disease has been clustered in a single cluster using the RFE_clust_Dunn algorithm to select the variables used as input in pvclust [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0124544#pone.0124544.ref043" target="_blank">43</a>] used to perform hierarchical clustering.