@article{Raczkiewicz:2020,
  author  = "D. Raczkiewicz and P. Bejga and J. Owoc and M. Witczak and I. Bojar",
  title   = "Gender gap in health condition and quality of life at advanced age",
  journal = "Annals of Agricultural and Environmental Medicine",
  pages   = "1--8",
  year    = "2020",
}