1 Department of Statistics, Rice University, Houston, TX, USA.
2 ESOMAS Department, University of Torino and Collegio Carlo Alberto, Torino, Italy.
3 Department of Statistics, University of California, Irvine, CA, USA.
4 Department of Infectious Disease, Infection Control, and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
5 Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
6 Department of Statistics, Rice University, Houston, TX, USA. marina@rice.edu.