Department of biomedical informatics, Center for Blood and Marrow Transplant Research, Minneapolis, MN, USA.|Department of biomedical informatics, Center for Blood and Marrow Transplant Research, Minneapolis, MN, USA.|Department of biomedical informatics, Center for Blood and Marrow Transplant Research, Minneapolis, MN, USA.|Department of biomedical informatics, Center for Blood and Marrow Transplant Research, Minneapolis, MN, USA.|Department of biomedical informatics, Center for Blood and Marrow Transplant Research, Minneapolis, MN, USA.|Department of biomedical informatics, Center for Blood and Marrow Transplant Research, Minneapolis, MN, USA.|Department of Mathematics, Bar Ilan University, Ramat Gan, Israel.|Department of Mathematics, Bar Ilan University, Ramat Gan, Israel.