Fixed ratio or lower limit of normal as cut-off value for FEV1/VC: Response to the letter by Vaz Fragoso et al

Affiliations

• ¹ Clinical Physiology and Nuclear Medicine Unit, Dept. of Clinical Sciences Malmö, Lund University, Skåne University Hospital Malmö, SE-205 02 Malmö, Sweden. Electronic address: per.wollmer@med.lu.se.
• ² Cardio-vascular Epidemiology, Dept. of Clinical Sciences Malmö, Lund University, Skåne University Hospital Malmö, SE-205 02 Malmö, Sweden.