1. Department of Computer Science, Applied Mathematics and Statistics; Universitat de Girona; Girona Spain
2. Disease Genomics-GCAT Group; Germans Trias Health Research Institute (IGTP)-Program of Predictive and Personalized Medicine of Cancer (PMPPC), Can Ruti Campus; Badalona Barcelona Spain
3. Department of Statistics and Operations Research; Universitat Politècnica de Catalunya; Barcelona Spain
4. Department of Biostatistics; University of Washington; Seattle WA USA