@article{KlokaBlumOldetal.2022,
  author    = {Jan Andreas Kloka and Lea Valeska Blum and Oliver Old and Kai Zacharowski and Benjamin Friedrichson},
  title     = {Characteristics and mortality of 561,379 hospitalized COVID-19 patients in Germany until December 2021 based on real-life data},
  journal   = {Scientific reports},
  volume    = {12},
  number    = {art. 11116},
  pages     = {1 -- 9},
  doi       = {10.1038/s41598-022-15287-3},
  year      = {2022},
}