@article{JohnFischerOchetal.2023,
  author    = {H. John and T. Fischer and U. Och and A. Baumeister and U. Wahrburg},
  title     = {Additional costs of a low-protein diet in children and adolescents with phenylketonuria},
  journal   = {Ern{\"a}hrungs Umschau},
  volume    = {66},
  number    = {11},
  pages     = {221 -- 227},
  doi       = {10.4455/eu.2019.036},
  year      = {2023},
}