Tiotropium versus Salmeterol for the Prevention of Exacerbations of COPD

Outpatient Management of Severe COPD

(2010) Dennis E. Niewoehner   NEW ENGLAND JOURNAL OF MEDICINE

Health Care Reform and the Need for Comparative-Effectiveness Research

(2010) Alvin I. Mushlin et al.   NEW ENGLAND JOURNAL OF MEDICINE

Susceptibility to Exacerbation in Chronic Obstructive Pulmonary Disease

(2010) John R. Hurst et al.   NEW ENGLAND JOURNAL OF MEDICINE

Cardiovascular events in patients with COPD: TORCH Study results

(2010) P. M. A. Calverley et al.   THORAX

Efficacy of a new once-daily long-acting inhaled  2-agonist indacaterol versus twice-daily formoterol in COPD

(2010) R. Dahl et al.   THORAX

Cardiovascular Safety of Tiotropium in Patients With COPD

(2009) Bartolome Celli et al.   CHEST

Methods for therapeutic trials in COPD: lessons from the TORCH trial

(2009) O. N. Keene et al.   EUROPEAN RESPIRATORY JOURNAL

Communal Responsibility for Health Care — The Example of Benefit Assessment in Germany

(2009) Peter T. Sawicki   NEW ENGLAND JOURNAL OF MEDICINE

Alternative mechanisms for tiotropium

(2009) E.D. Bateman et al.   PULMONARY PHARMACOLOGY & THERAPEUTICS

A 4-Year Trial of Tiotropium in Chronic Obstructive Pulmonary Disease

(2008) Donald P. Tashkin et al.   NEW ENGLAND JOURNAL OF MEDICINE