@article{Michalak:2018,
  author  = "S. Michalak and J. Rupa-Matysek and L. Gil",
  title   = "Comorbidities, repeated hospitalizations, and age>80 years as indicators of anemia development in the older population",
  journal = "Annals of Hematology",
  pages   = "1--11",
  year    = "2018",
}