1. NanoBioCel Group, Laboratory of Pharmaceutics, School of PharmacyUniversity of the Basque Country (UPV/EHU) Vitoria‐Gasteiz Spain
2. Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER‐BBN) Vitoria‐Gasteiz Spain
3. Department of RadiologyCenter for Molecular Imaging, University of Michigan Medical School Ann Arbor Michigan
4. Department of Biomedical EngineeringUniversity of Michigan Medical School Ann Arbor Michigan
5. Department of Microbiology and ImmunologyUniversity of Michigan Medical School Ann Arbor Michigan