@article{FreundPetersKlimmMahleretal.2011,
  author    = {Tobias Freund and Frank Peters-Klimm and Cornelia Mahler and Justine Rochon and Jochen Gensichen and Antje Erler and Martin Beyer and Annika Baldauf and Ferdinand M. Gerlach and Joachim Szecsenyi},
  title     = {Primary care practice-based care management for chronically ill patients (PraCMan): study protocol for a cluster randomized controlled trial [ISRCTN56104508]},
  year      = {2011}
}