1. Charité-Universitätsmedizin Berlin, Institute of Transfusion Medicine, Berlin, Germany;
2. Institute of Health Service and Transfusion Medicine, Bejing, PR China;
3. Faculty of Pharmacy, Payap University, Chiang Mai, Thailand;
4. Department of Experimental Neurology, Clinic of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany;
5. Department of Radiological Technology, Naresuan University, Phitsanulok, Thailand;
6. Medical Faculty, Department of Medical Physics, Biophysics, and Radiology, Trakia Unversity, Stara Zagora, Bulgaria