Ragazzo, T.G. et al. 2017. Accuracy of transient elastography-FibroScan®, acoustic radiation force impulse (ARFI) imaging, the enhanced liver fibrosis (ELF) test, APRI, and the FIB-4 index compared with liver biopsy in patients with chronic hepatitis C. Clinics. 72, 9 (Oct. 2017), 516–525. DOI:https://doi.org/10.6061/clinics/2017(09)01.