@article{TsiligianniAlmaKocksetal.2016,
  author    = {Ioanna G. Tsiligianni and Harma J. Alma and Janwillem W. H. Kocks and Corina de Jong and Danijel Jelusic and Michael Wittmann and Michael Schuler and Konrad Schultz and Boudewijn J. Kollen and Thys van der Molen},
  title     = {Investigating sensitivity, specificity, and area under the curve of the Clinical COPD Questionnaire, COPD Assessment Test, and Modified Medical Research Council scale according to GOLD using St George's Respiratory Questionnaire cutoff 25 (and 20) as reference},
  journal   = {International Journal of COPD},
  volume    = {11},
  doi       = {10.2147/COPD.S99793},
  year      = {2016},
}