Porcel José M, Leung Chi Chiu, Restrepo Marcos I, Lee Pyng
Pleural Diseases Unit, Department of Internal Medicine, Arnau de Vilanova University Hospital, Biomedical Research Insitute of Lleida, Lleida, Spain.
Respirology. 2012 Apr;17(3):573-82. doi: 10.1111/j.1440-1843.2012.02128.x.