Computational Biophysics Laboratory, Universitat Pompeu Fabra, Barcelona Biomedical Research Park, Barcelona, Spain.|Computational Biophysics Laboratory, Universitat Pompeu Fabra, Barcelona Biomedical Research Park, Barcelona, Spain.|Computational Biophysics Laboratory, Universitat Pompeu Fabra, Barcelona Biomedical Research Park, Barcelona, Spain.|Computational Biophysics Laboratory, Universitat Pompeu Fabra, Barcelona Biomedical Research Park, Barcelona, Spain.