α₁-Antitrypsin deficiency: paper by Stolk et al

In the paper entitled “Correlation between annual change in health status and computer tomography derived lung density in subjects with α₁-antitrypsin deficiency” by J Stolk et al which appeared in the December 2003 issue of Thorax on pages 1027–30, the affiliation address for J Stolk, W H Ng and K F Rabe on page 1030 and the correspondence address on page 1027 should have been Department of Pulmonology, Leiden University Medical Center and not Department of Radiology and Divison of Image Processing. The publishers apologise for this error.