Corrigendum to "Branched GDGT signals in fluvial sediments of the Danube River basin: Method comparison and longitudinal evolution" [Organic Geochem. 103 (2017) 88–96]. (March 2017) - Freymond, Chantal V.; Peterse, Francien; Fischer, Lorena V.; Filip, Florin; Giosan, Liviu; Eglinton, Timothy I.