Original Research

“Frequent exacerbator” is a phenotype of poor prognosis in Japanese patients with chronic obstructive pulmonary disease

Tomioka R , Kawayama T, Suetomo M, Kinoshita T, Tokunaga Y, Imaoka H, Matsunaga K, Okamoto M, Hoshino T

International Journal of Chronic Obstructive Pulmonary Disease 2016, 11:207-216

Published Date: 3 February 2016