@article{Michalak:2019,
  author  = "S. Michalak and J. Rupa-Matysek and I. Hus and L. Gil",
  title   = "Unexplained anemia in the elderly - a real life analysis of 981 patients",
  journal = "Archives of Medical Science",
  volume  = "Vol. 16",
  number  = "Issue 4",
  pages   = "834--841",
  year    = "2019",
}