@article{AksanTugalHeinetal.2020,
  author    = {Ayseg{\"u}l Aksan and Dilem Tugal and Nathalena Hein and Katharina Boettger and Yurani Caicedo-Zea and Ina Diehl and Claudia Schumann and Franz-Paul Armbruster and J{\"u}rgen Stein},
  title     = {Measuring vitamin D status in chronic inflammatory disorders: how does chronic inflammation affect the reliability of vitamin D metabolites in patients with IBD?},
  journal   = {Journal of clinical medicine},
  volume    = {9},
  number    = {547},
  doi       = {10.3390/jcm9020547},
  year      = {2020},
}