@article{WawraBuiaHanisch2017,
  author    = {Nikolaus Wawra and Alexander Buia and Ernst Hanisch},
  title     = {Development of single-port cholecystectomy : results of a case-control study matched to one surgeon},
  journal   = {Open access surgery},
  volume    = {5},
  pages     = {33 -- 38},
  doi       = {10.2147/OAS.S36559},
  year      = {2017},
}