“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, vol. 72, no. 9, pp. 516–525, Oct. 2017, doi: 10.6061/clinics/2017(09)01.