... the study and made substantial contributions to the analysis andinterpretation of the data. HFK and PG made substantial contr ibutions to theanalysis and interpretation of the data. BY carried ... of Bern, Bern,Switzerland. We also acknowledge Kirsten Clift for proofreading themanuscript. This work is financially supported by an Empa internal grant andthe Swiss Nanoscience Institute (SNI) ... Gallen, Switzerland.2Institute of Anatomy, Division of Histology, University of Bern, Bern, Switzerland.3Division Neonatology, Department of Paediatrics, Inselspital and University of Bern, Bern,...