@book{UBHD-66723477,
  author={Krombach, Patrick},
  title={Harnsteine bei Kindern und Jugendlichen},
  subtitle={Ergebnisse zum klinischen Bild, Therapie und Rezidiven},
  year={2008},
  pages={99 Bl.},
  language={ger},
  school={Heidelberg, Univ., Diss., 2009},
  library={UB [Signatur: 2009 U 542] ; UW [Signatur: Diss. 09.135]},
}
@article{UBHD-67404495,
  author={Ritter, Manuel and Siegel, Fabian and Krombach, Patrick and Martinschek, Andreas and Weiß, Christel and H{\"a}cker, Axel and Pelzer, Alexandre E.},
  title={Influence of surgeon's experience on fluoroscopy time during endourological interventions},
  year={2013},
  pages={183-187},
  language={eng},
  issn={0724-4983},
  volume={31},
  number={1},
  journal={World journal of urology},
}
@article{UBHD-68275409,
  author={Ritter, Manuel and Krombach, Patrick and Michel, Maurice Stephan and H{\"a}cker, Axel},
  title={Initial experience with a newly developed antirefluxive ureter stent},
  year={2012},
  pages={349-353},
  language={eng},
  issn={1434-0879},
  volume={40},
  number={4},
  note={Published online: 18 August 2011 ; Gesehen am 28.06.2018},
  journal={Urological research},
  doi={10.1007/s00240-011-0415-5},
}
@article{UBHD-68275414,
  author={Ritter, Manuel and Krombach, Patrick and Martinschek, Andreas and Siegel, Fabian and Weiß, Christel and H{\"a}cker, Axel and Pelzer, Alexandre E.},
  title={Radiation exposure during endourologic procedures using over-the-table fluoroscopy sources},
  year={2012},
  pages={47-51},
  language={eng},
  issn={1557-900X},
  volume={26},
  number={1},
  note={Published online:4 Jan 2012 ; Gesehen am 28.06.2018},
  journal={Journal of endourology},
  doi={10.1089/end.2011.0333},
}
@article{UBHD-67517855,
  author={Ritter, Manuel and Krombach, Patrick and Bolenz, Christian and H{\"a}cker, Axel},
  title={Standardized comparison of prostate morcellators using a new ex-vivo model},
  year={2012},
  pages={697-700},
  language={eng},
  issn={1557-900X},
  volume={26},
  number={6},
  note={Gesehen am: 09.01.2014},
  journal={Journal of endourology},
  doi={10.1089/end.2011.0536},
}