@article{smeeing_houwert_kruyt_meijden_hietbrink_2016, 
  title={Clinical research on postoperative trauma care: has the position of observational studies changed?}, 
  volume={43}, 
  DOI={10.1007/s00068-016-0720-3}, 
  publisher={Springer Nature}, 
  author={Smeeing and Houwert and Kruyt and Meijden and Hietbrink}, 
  year={2016}, 
  month={Sep}
  }