@article{UBHD-68018713,
  author={Osswald, Brigitte and Tochtermann, Ursula and Schweiger, Peter M. and Thomas, Gisela and Vahl, Christian-Friedrich and Hagl, Siegfried},
  title={Individuelle Risikoadjustierung durch Anwendung der parametrischen Hazardfunktion},
  year={1999},
  pages={170-177},
  language={ger},
  issn={1423-5528},
  volume={3},
  journal={Kardiovaskul{\"a}re Medizin},
}
@article{UBHD-68018691,
  author={Osswald, Brigitte and Tochtermann, Ursula and Thomas, Gisela and Vahl, Christian-Friedrich and Hagl, Siegfried},
  title={Influence of follow-up response on risk-factor analysis},
  year={1999},
  pages={33-37},
  language={eng},
  issn={1439-1902},
  volume={47},
  number={1},
  note={Gesehen am 15.08.2016},
  journal={The thoracic and cardiovascular surgeon},
  doi={10.1055/s-2007-1013105},
}
@article{UBHD-68018689,
  author={Osswald, Brigitte and Tochtermann, Ursula and Thomas, Gisela and Vahl, Christian-Friedrich and Hagl, Siegfried},
  title={The meaning of early mortality after CABG},
  year={1999},
  pages={401-407},
  language={eng},
  issn={1873-734X},
  volume={15},
  number={4},
  note={Gesehen am 15.08.2016},
  journal={European journal of cardio-thoracic surgery},
  doi={10.1016/S1010-7940(99)00029-9},
}
@article{UBHD-68018693,
  author={Osswald, Brigitte and Tochtermann, Ursula and Schweiger, Peter M. and Thomas, Gisela and G{\"o}hring, Dieter and Vahl, Christian-Friedrich and Hagl, Siegfried},
  title={Target, application, and interpretation of scores and alternative methods for risk assessment in cardiac surgery},
  year={2000},
  pages={72-78},
  language={eng},
  issn={1439-1902},
  volume={48},
  number={2},
  note={Gesehen am 15.08.2016},
  journal={The thoracic and cardiovascular surgeon},
  doi={10.1055/s-2000-9869},
}