1. Division of Respiratory and Critical Care Medicine; National University Hospital; Singapore
2. Department of Health; TB and Chest Service; Hong Kong China
3. South Texas Veterans Health Care System ALMD; San Antonio Texas USA
4. Department of Respiratory Medicine; Juntendo University, Graduate School of Medicine; Tokyo Japan
5. Department of Pulmonary Medicine, Zhongshan Hospital; Fudan University; Shanghai China
6. Pleural Medicine Unit; Arnau de Vilanova University Hospital; Lleida Spain