TY - STAND AU - K. Rothnie AU - H. Mullerova AU - L. Smeeth AU - J. Quint BT - Am J Respir Crit Care Med DO - 10.1164/rccm.201710-2029OC M1 - 4 PY - 2018 SP - 464 EP - 471 T2 - Am J Respir Crit Care Med TI - Natural History of Chronic Obstructive Pulmonary Disease Exacerbations in a General Practice-based Population with Chronic Obstructive Pulmonary Disease VL - 198 SN - 1073-449x ER -