@article{AmreinParekhWestphaletal.2019,
  author    = {Karin Amrein and Dhruv Parekh and Sabine Westphal and Jean-Charles Preiser and Andrea Berghold and Regina Riedl and Philipp Eller and Peter Schellongowski and David Thickett and Patrick Meybohm},
  title     = {Effect of high-dose vitamin D3 on 28-day mortality in adult critically ill patients with severe vitamin D deficiency: a study protocol of a multicentre, placebo-controlled double-blind phase III RCT (the VITDALIZE study)},
  journal   = {BMJ open},
  volume    = {9},
  number    = {11, e031083},
  pages     = {1 -- 8},
  doi       = {10.1136/bmjopen-2019-031083},
  year      = {2019},
}