1. Center for Modeling and Simulation in the Biosciences, BioQuant Center, Heidelberg University, Heidelberg, Germany
2. Program for Experimental and Theoretical Modeling, Division of Hepatology, Department of Medicine, Loyola University Medical Center, Maywood, Illinois, USA
3. Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, New Mexico, USA
4. Department of Microbiology and Immunology, Loyola University Medical Center, Maywood, Illinois, USA