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Akamatsu, Keiichiro, Kazuto Matsunaga, Hisatoshi Sugiura, Akira Koarai, Tsunahiko Hirano, Yoshiaki Minakata, och Masakazu Ichinose. Improvement of Airflow Limitation By Fluticasone Propionate/Salmeterol in Chronic Obstructive Pulmonary Disease: What Is the Specific Marker? Frontiers Research Foundation, 2011.

Akamatsu, Keiichiro, et al. Improvement of Airflow Limitation By Fluticasone Propionate/Salmeterol in Chronic Obstructive Pulmonary Disease: What Is the Specific Marker? Frontiers Research Foundation, 2011.