@article{UBHD-68383710,
  author={Weidmann, Christian and M{\"u}ller-Steinhardt, Michael and Schneider, Sven and Weck, Eberhard and Kl{\"u}ter, Harald},
  title={Characteristics of lapsed German whole blood donors and barriers to return four years after the initial donation},
  year={2012},
  pages={9-15},
  language={eng},
  issn={1660-3818},
  volume={39},
  number={1},
  note={Published online: December 23, 2011 ; Gesehen am 30.04.2019},
  journal={Transfusion medicine and hemotherapy},
  doi={10.1159/000335602},
}
@article{UBHD-68383682,
  author={Weidmann, Christian and Schneider, Sven and Litaker, David and Weck, Eberhard and Kl{\"u}ter, Harald},
  title={A spatial regression analysis of German community characteristics associated with voluntary non-remunerated blood donor rates},
  year={2012},
  pages={47-54},
  language={eng},
  issn={1423-0410},
  volume={102},
  number={1},
  note={Published online 29 April 2011 ; Gesehen am 30.04.2019},
  journal={Vox sanguinis},
  doi={10.1111/j.1423-0410.2011.01501.x},
}