@article{MuellenbachRoewerKranke2013,
  author    = {Ralf Michael M{\"u}llenbach and Norbert Roewer and Peter Kranke},
  title     = {Quality Assurance Would Be Welcome},
  journal   = {Deutsches {\"A}rzteblatt international},
  volume    = {110},
  number    = {27-28},
  doi       = {10.3238/arztebl.2013.0485a},
  year      = {2013},
}