Lancet Gastroenterol Hepatol. 2019 Apr 8. pii: S2468-1253(19)30087-1. doi: 10.1016/S2468-1253(19)30087-1. [Epub ahead of print]。Optimisation of the use of APRI and FIB-4 to rule out cirrhosis in patients with chronic hepatitis B: results from the SONIC-B study