@article{HausmannKubeschAmirietal.2019,
  author    = {Johannes Hausmann and Alica Kubesch and Mana Amiri and Natalie Filmann and Irina Ursula Blumenstein},
  title     = {Vitamin D deficiency is associated with increased disease activity in patients with inflammatory bowel disease},
  journal   = {Journal of Clinical Medicine},
  volume    = {8},
  number    = {9, Art. 1319},
  pages     = {1 -- 9},
  doi       = {10.3390/jcm8091319},
  year      = {2019},
}