Division of Hematology and Medical Oncology, Department of Internal Medicine, Cipto Mangunkusumo National General Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia. Division of Hematology and Medical Oncology, Department of Internal Medicine, Dharmais National Cancer Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia. Department of Internal Medicine, Cipto Mangunkusumo National General Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia.