%0 Journal Article %T Serum biomarkers of delirium in the elderly: a narrative review %A Janna Tontsch %A Katharina Toft %A Luzius Steiner %A Martin Siegemund %A Salim Abdelhamid %J Archive of "Annals of Intensive Care". %D 2019 %R 10.1186/s13613-019-0548-1 %X The online version of this article (10.1186/s13613-019-0548-1) contains supplementary material, which is available to authorized users %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6603109/