@article{HillHeylandRossaintetal.2020,
  author    = {Aileen Hill and Daren K. Heyland and Rolf Rossaint and Rakesh C. Arora and Daniel T. Engelman and Andrew G. Day and Christian Stoppe},
  title     = {Longitudinal outcomes in octogenarian critically ill patients with a focus on frailty and cardiac surgery},
  journal   = {Journal of Clinical Medicine},
  volume    = {10},
  number    = {1},
  doi       = {10.3390/jcm10010012},
  year      = {2020},
}