Spirometric Transition of at Risk Individuals and Risks for Progression to Chronic Obstructive Pulmonary Disease in General Population Yong Suk Jo; Chin Kook Rhee; Sang Hyuk Kim; Hyun Lee; Joon Young Choi;

N-acetylcysteine Treatment in Chronic Obstructive Pulmonary Disease (COPD) and Chronic Bronchitis/Pre-COPD: Distinct Meta-analyses Alberto Papi; Franco Alfano; Tommaso Bigoni; Lorenzo Mancini; Amal Mawass; Federico Baraldi; Cristina Aljama; Marco Contoli; Marc Miravitlles;

Optimal Treatment of the Symptomatic Smoker: Make a Diagnosis Not Empiric Treatment Marc Miravitlles; John R. Hurst;