@misc{8183,
  author = {R. Persson and S. Lee and M. Yood and M. Wagner and N. Minton and S. Niemcryk and A. Lindholm and A. Evans and S. Jick},
  title = {Multi-database study of multiple sclerosis: identification, validation and description of MS patients in two countries},
  year = {2019},
  journal = {J Neurol},
  issn = {0340-5354},
  doi = {10.1007/s00415-019-09238-8},
}