Akurasi diagnostik skor aspartate aminotransferase to platelet ratio index, fibrosis index based on the 4 factors dan transient elastography untuk mendeteksi fibrosis hati pada hepatitis C kronik = Diagnostic accuracy of aspartate aminotransferase to platelet ratio index score fibrosis index based on the 4 factors and transient elastography for liver fibrosis detection in chronic hepatitis C