author  = "R. Rzepka and B. Dołęgowska and D. Sałata and A. Rajewska and M. Budkowska and L. Domański and a. et",
  title   = "Soluble receptors for advanced glycation end products and receptor activator of NF-kB ligand serum levels as markers of premature labor.",
  journal = "BMC Pregnancy and Childbirth",
  volume  = "Vol. 15",
  number  = "nr 1",
  pages   = "1--13",
  year    = "2015",