Christensen, P B, Øvrehus, A L H & The Polaris observatoriy HCV collaborators 2017, ' Global prevalence and genotype distribution of hepatitis C virus infection in 2015 : a modelling study ', The Lancet Gastroenterology & Hepatology, vol. 2, no. 3, pp. 161–176 . https://doi.org/10.1016/S2468-1253(16)30181-9 LANCET GASTROENTEROLOGY & HEPATOLOGY The Lancet Gastroenterology & Hepatology, Vol. 2, No 3 (2017) pp. 161-176 Krarup, H & Polaris Observatory HCV Collaborators 2017, ' Global prevalence and genotype distribution of hepatitis C virus infection in 2015 : a modelling study ', The Lancet Gastroenterology & Hepatology, vol. 2, no. 3, pp. 161-176 . https://doi.org/10.1016/S2468-1253(16)30181-9