Preserved Ratio Impaired Spirometry in US Primary Care Patients Diagnosed with Chronic Obstructive Pulmonary Disease by Evans A, Tarabichi Y, Pace WD, Make B, Bushell N, Carter V, Chang KL, Fox C, Han MK, Kaplan A, Kocks JWH, Le Lievre C, Roussos A, Skolnik N, Soriano JB, Yawn BP, Price D

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Prospective observational study in patients with obstructive lung disease: NOVELTY design by Reddel, H, Gerhardsson de Verdier, M, Agustí, A, Anderson, G, Beasley, R, Bel, E, Janson, C, Make, B, Martin, R, Pavord, I, Price, D, Keen, C, Gardev, A, Rennard, S, Sveréus, A, Bansal, A, Brannman, L, Karlsson, N, Nuevo, J, Nyberg, F, Young, S, Vestbo, J