Inkompatibilitas transfusi trombosit akibat polimorfisme Human Platelet Antigen (HPA-1,-2,-3,-4,-5,-6,-15) dan deteksi Antibodi Anti-HPA-3 dan HPA-15 pada pasien anemia aplastik = Platelet transfusion incompatibility due to polymorphism Human Platelet Antigen (HPA-1,-2,-3,-4,-5,-6,-15) and Anti HPA-3 and HPA-15 antibodies detection in patients with aplastic anemia