1 Department of Experimental Immunohematology, Sanquin Research, Amsterdam, The Netherlands; Department of Biomolecular Mass Spectrometry and Proteomics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht.
2 Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden.
3 Department of Experimental Immunohematology, Sanquin Research, Amsterdam, The Netherlands; Willem-Alexander Children's Hospital, Department of Pediatrics, Division of Neonatology, Leiden University Medical Center, Leiden, Netherlands.
4 Department of Experimental Immunohematology, Sanquin Research, Amsterdam, The Netherlands; Department of Obstetrics and Gynecology, Leiden University Medical Center, Leiden, Netherlands.
5 Department of Experimental Immunohematology, Sanquin Research, Amsterdam, The Netherlands; Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam.
6 Department of Experimental Immunohematology, Sanquin Research, Amsterdam, The Netherlands; Department of Biomolecular Mass Spectrometry and Proteomics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht. g.vidarsson@sanquin.nl.