@article{TsuprykovBuseSkobloetal.2018,
  author    = {Oleg Tsuprykov and Claudia Buse and Roman Skoblo and Afrozul Haq and Berthold Hocher},
  title     = {Reference intervals for measured and calculated free 25-hydroxyvitamin D in normal pregnancy},
  journal   = {The Journal of Steroid Biochemistry and Molecular Biology},
  volume    = {181},
  pages     = {80 -- 87},
  doi       = {10.1016/j.jsbmb.2018.03.005},
  year      = {2018},
}