1. Scientific Research Center Suriname Academic Hospital Paramaribo Paramaribo Suriname
2. Department of Pediatrics Academic Hospital Paramaribo Paramaribo Suriname
3. Faculty of Medical Sciences Anton the Kom University of Suriname Paramaribo Suriname
4. Department of Obstetrics Leiden University Medical Center Leiden The Netherlands
5. Department of Experimental Immunohematology Sanquin Research Amsterdam The Netherlands
6. Department of Immunohematology and Blood Transfusion Leiden University Medical Center Leiden The Netherlands
7. Department of Pediatrics Diakonessen Hospital Paramaribo Suriname