1. GOLD. Global Initiative for Chronic Obstructive Lung Disease. Available from: http://www.goldcopd.org /. Updated 2013.
2. Rabe KF, Hurd S, Anzueto A, Barnes PJ, Buist SA, Calverley P, et al. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease: GOLD executive summary. Am J Respir Crit Care Med. 2007;176(6):532–55.
3. Chong J, Karner C, Poole P. Tiotropium versus long-anting beta-agonists for stable chronic obstructive pulmonary disease. Cochrane Database Syst Rev. 2012;9:CD009157.
4. Weinberger M, Murray MD, Marrero DG, Brewer N, Lykens M, Harris LE, et al. Effectiveness of pharmacist care for patients with reactive airways disease: a randomized controlled trial. JAMA. 2002;288(13):1594–602.
5. Nkansah N, Mostovetsky O, Yu C, Chheng T, Beney J, Bond CM, et al. Effect of outpatient pharmacists’ non-dispensing roles on patient outcomes and prescribing patterns. Cochrane Database Syst Rev. 2010;7:CD000336.