Publication info: Thorax. 2008 Feb; 63(2):160-6.PMID: 17675318External link: http://www.ncbi.nlm.nih.gov/pubmed/17675318Publication date: February, 2008Authors: Mak V, Davies E, Putcha V, Choodari-Oskooei B, Møller HRegistry: National Disease Registration Service, EnglandPublication type: Paper