TY - STAND AU - H. Mullerova AU - C. Lu AU - H. Li AU - M. Tabberer BT - PLoS One DO - 10.1371/journal.pone.0085540 M1 - 1 PY - 2014 EP - e85540 T2 - PLoS One TI - Prevalence and burden of breathlessness in patients with chronic obstructive pulmonary disease managed in primary care VL - 9 SN - 1932-6203 ER -