1. Einthoven Laboratory of Vascular and Regenerative Medicine, Division of Nephrology, Department of Internal Medicine, Leiden University Medical Center, Leiden, The Netherlands
2. Einthoven Laboratory of Vascular and Regenerative Medicine, Division of Endocrinology, Department of Internal Medicine, Leiden University Medical Center, Leiden, The Netherlands
3. Section of Electron Microscopy, Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, The Netherlands
4. Department of Nephrology, Radboud University Medical Center, Nijmegen, The Netherlands