@article{AndratschkeAlheidAllgaeueretal.2018,
  author    = {N. Andratschke and H. Alheid and M. Allg{\"a}uer and G. Becker and O. Blanck and J. Boda-Heggemann and T. Brunner and M. Duma and S. Gerum and M. Guckenberger and G. Hildebrandt and R. J. Klement and V. Lewitzki and C. Ostheimer and A. Papachristofilou and C. Petersen and T. Schneider and R. Semrau and S. Wachter and D. Habermehl},
  title     = {The SBRT database initiative of the German Society for Radiation Oncology (DEGRO): patterns of care and outcome analysis of stereotactic body radiotherapy (SBRT) for liver oligometastases in 474 patients with 623 metastases},
  journal   = {BMC Cancer},
  volume    = {18},
  doi       = {10.1186/s12885-018-4191-2},
  year      = {2018},
}