@article{GonzalezGonzalezSchmuckerBlometal.2019,
  author    = {Ana I. Gonz{\´a}lez-Gonz{\´a}lez and Christine Schmucker and Jeanet W. Blom and J. M. van den Akker and Truc Sophia Nguyen and Julia Nothacker and J{\"o}rg J. Meerpohl and Kristian R{\"o}ttger and Odette Wegwarth and Tammy Hoffmann and Sharon E. Straus and Ferdinand M. Gerlach and Christiane Muth},
  title     = {Health-related preferences of older patients with multimorbidity: the protocol for an evidence map},
  journal   = {BMJ open},
  volume    = {9},
  number    = {9, e029724},
  pages     = {1 -- 6},
  doi       = {10.1136/bmjopen-2019-029724},
  year      = {2019},
}