@article{HueppeZeunerKarstensetal.2022,
  author    = {Angelika H{\"u}ppe and Christel Zeuner and Sven Karstens and Martin Hochheim and Max Wunderlich and Heiner Raspe},
  title     = {Feasibility and long-term efficacy of a proactive health program in the treatment of chronic back pain: A randomized controlled trial},
  journal   = {BMC Health Services Research},
  volume    = {19},
  pages     = {1 -- 13},
  doi       = {10.1186/s12913-019-4561-8},
  year      = {2022},
}