Comparing the validity of different ICD coding abstraction strategies for sepsis case identification in German claims data. - Fleischmann-Struzek, Carolin; Thomas-Rüddel, Daniel O.; Schettler, Anna; Schwarzkopf, Daniel; Stacke, Angelika; Seymour, Christopher W.; Haas, Christoph; Dennler, Ulf; Reinhart, Konrad (PLoS ONE, 2018)