1. Tissue Engineering Division, Department of Bioengineering, IQS–Ramon Llull University, Barcelona, Spain.
2. Molecular & Genetic Toxicology, Bayer HealthCare AG, Wuppertal, Germany.
3. Center for Biomedical Engineering, Massachusetts Institute of Technology, Boston, Massachusetts.
4. Translational Centre for Regenerative Medicine, Leipzig University, Leipzig, Germany.