@incollection{Ernst,
  author    = {Ernst, Stefan},
  title     = {Schweigepflichtentbindungsklauseln im Gesundheitswesen},
  series = {AGB-Recht : Kommentar zu den \S\S 305-310 BGB und zum UKlaG},
  editor    = {Ulmer, Peter and Brandner, Hans Erich and Hensen, Horst-Diether},
  edition   = {12.},
  publisher = {Otto Schmidt Verlag},
  address   = {K{\"o}ln},
  isbn      = {978-3-504-45111-0},
  pages     = {1782 -- 1785},
  language  = {de}
}
@unpublished{Ernst,
  author    = {Ernst, Stefan},
  title     = {Die klauselm{\"a}ßige Schweigepflichtentbindung im Gesundheitswesen},
  series = {Der IT-Rechtsberater},
  volume    = {2015},
  issn      = {1617-1527},
  pages     = {245 -- 247},
  language  = {de}
}
@unpublished{Ernst,
  author    = {Ernst, Stefan},
  title     = {Die klauselm{\"a}ßige Schweigepflichtentbindung im Gesundheitswesen},
  series = {Gesundheitsrecht},
  volume    = {14},
  issn      = {1610-1197},
  pages     = {654 -- 656},
  language  = {de}
}