@phdthesis{Janke2003,
  author      = {Markus Janke},
  title       = {Erste klinische Erfahrungen mit dem neuen Tracheostomaventil Window (Adeva)},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year        = {2003},
}