1. Department of Internal Medicine, Section Allergy and Clinical Immunology, Groene Hart Ziekenhuis, Gouda, The Netherlands
2. Laboratory for Clinical Chemistry and Hematology, Groene Hart Ziekenhuis, Gouda, The Netherlands
3. Department of Internal Medicine, Section Hematology, Groene Hart Ziekenhuis, Gouda, The Netherlands
4. Thoracic Oncology, Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands