@article{BoumaBarthMilleretal.2019,
  author    = {Gerrit J. Bouma and Martin Barth and Larry E. Miller and Sandro Eustacchio and Charlotte Fl{\"u}h and Richard Klaus Ludwig Bostelmann and Senol Jadik},
  title     = {Challenges in the analysis of longitudinal pain data : practical lessons from a randomized trial of annular closure in lumbar disc surgery},
  journal   = {Pain research and treatment},
  volume    = {2019},
  number    = {Art. 3498603},
  pages     = {1 -- 6},
  doi       = {10.1155/2019/3498603},
  year      = {2019},
}