[1] Department of General Internal Medicine,
[2] Leiden University Hospital,undefined
[3] Building 1,undefined
[4] C1R,undefined
[5] P. O. Box 9600,undefined
[6] 2300 RC Leiden,undefined
[7] The Netherlands,undefined
[8] Department of Hematology,undefined
[9] Leiden University Hospital,undefined
[10] Leiden,undefined
[11] The Netherlands,undefined