Figure 2

Cluster analysis: hierarchical tree of 12 objects and newly obtained clusters (numbered from 13 to 23). The numbers along the horizontal axis represent the indices of the objects in the original data set (1: diagnosis in France (object 1), 2: diagnosis in Italy (object 2), 3: surgery in France (object 3), 4: surgery in Italy (object 4), 5: chemotherapy in France (object 5), 6: chemotherapy in Italy (object 6), 7: radiotherapy in France (object 7), 8: radiotherapy in Italy (object 8), 9: follow-up without relapse in France (object 9), 10: follow-up without relapse in Italy (object 10), 11: follow-up with relapse in France (object 11), 12: follow-up with relapse in Italy (object 12). The newly clusters obtained by cluster analysis are numbered from 13 to 23.