@article{WarschburgerHaenigFriedtetal.2014,
  author    = {Petra Warschburger and Johanna Haenig and Michael Friedt and Carsten Posovszky and Maike Schier and Claudia Calvano},
  title     = {Health-Related quality of life in children with abdominal pain due to functional or organic gastrointestinal disorders},
  journal   = {Journal of pediatric psychology},
  volume    = {39},
  number    = {1},
  pages     = {45 -- 54},
  doi       = {10.1093/jpepsy/jst070},
  year      = {2014},
}