@article{TeupeGroenefeld2013,
  author    = {Claudius Teupe and Gerian Gr{\"o}nefeld},
  title     = {Platypnea-orthodeoxia due to osteoporosis and severe kyphosis: a rare cause for dyspnea and hypoxemia},
  journal   = {Heart international},
  volume    = {6},
  number    = {e13},
  pages     = {45 -- 46},
  doi       = {10.4081/hi.2011.e13},
  year      = {2013},
}