@phdthesis{Ullmann2007,
  author      = {Birgit Ullmann},
  title       = {Langzeiteffektivit{\"a}t acht Jahre nach Gastric banding-Operation},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year        = {2007},
}