@article{UBHD-68910416,
  author={Mussell, Monika and B{\"o}cker, Ulrich and Nagel, Nils and Singer, Manfred V.},
  title={Predictors of disease-related concerns and other aspects of health-related quality of life in outpatients with inflammatory bowel disease},
  year={2004},
  pages={1273-1280},
  language={eng},
  issn={1473-5687},
  volume={16},
  number={12},
  note={Gesehen am 25.04.2022},
  journal={European journal of gastroenterology & hepatology},
  doi={10.1097/00042737-200412000-00007},
}
@article{UBHD-68910843,
  author={Mussell, Monika and B{\"o}cker, Ulrich and Nagel, Nils and Olbrich, R. and Singer, Manfred V.},
  title={Reducing psychological distress in patients with inflammatory bowel disease by cognitive-behavioural treatment},
  subtitle={exploratory study of effectiveness},
  year={2003},
  pages={755-762},
  language={eng},
  issn={1502-7708},
  volume={38},
  number={7},
  note={Published online: 08 Jul 2009 ; Gesehen am 26.04.2022},
  journal={Scandinavian journal of gastroenterology},
  doi={10.1080/00365520310003110},
}