1. Departamento de Materiales y Minerales, Universidad Nacional de Colombia, Sede Medellín, Medellín, Colombia
2. Institute for Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA
3. Laboratory for Molecular and Computational Genomics, UW Biotechnology Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
4. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60349, USA