@article{GuederBrennerAngermannetal.2012,
  author    = {G{\"u}lmisal G{\"u}der and Susanne Brenner and Christiane E. Angermann and Georg Ertl and Matthias Held and Alfred P. Sachs and Jan Willem Lammers and Peter Zanen and Arno W. Hoes and Stefan St{\"o}rk and Frans H. Rutten},
  title     = {"GOLD or lower limit of normal definition? a comparison with expert-based diagnosis of chronic obstructive pulmonary disease in a prospective cohort-study"},
  year      = {2012},
}