1. Division of Hematology/Medical Oncology, Department of Internal Medicine, Medical Faculty of Diponegoro University, Dr Kariadi Hospital, Semarang, Central Java 50244, Indonesia
2. Department of Medicine, Palangkaraya Hospital, Palangkaraya, Central Kalimantan 73111, Indonesia
3. Department of Hematology/Medical Oncology, A. M. Parikesit Hospital and A. W. Sjahranie Hospital, Mulawarman School of Medicine, Samarinda, East Kalimantan 75123, Indonesia
4. Department of Anatomical Pathology, Dr Kariadi Hospital, Semarang, Central Java 50244, Indonesia