@article{SchaeferHansenSchoenetal.2009,
  author    = {Ingmar Sch{\"a}fer and Heike Hansen and Gerhard Sch{\"o}n and Wolfgang Maier and Susanne H{\"o}fels and Attila Altiner and Angela Fuchs and Ferdinand M. Gerlach and Juliana Petersen and Jochen Gensichen and Sven Schulz and Steffi Gerlinde Riedel-Heller and Melanie Luppa and Siegfried Weyerer and Jochen Werle and Horst Bickel and Kerstin Barth and Hans-Helmut K{\"o}nig and Anja Rudolph and Birgitt Wiese and Jana Prokein and Monika Bullinger and Olaf von dem Knesebeck and Marion Eisele and Hanna Kaduszkiewicz and Karl Wegscheider and Hendrik van den Bussche},
  title     = {The German MultiCare-study : patterns of multimorbidity in primary health care - protocol of a prospective cohort study},
  journal   = {BMC health services research},
  volume    = {9},
  number    = {Art. 145},
  pages     = {1 -- 9},
  doi       = {10.1186/1472-6963-9-145},
  year      = {2009},
}