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Determinants of respiratory symptom development in patients with chronic airflow obstruction

Jung Hyun Chang1, Jin Hwa Lee, Mi-kyoung Kim

  • 1Department of Internal Medicine, Ewha Medical Research Institute, Mokdong Hospital of Ewha Womans University, 911-1 Mokdong, YangCheon-Ku, Seoul 158-710, Korea. hs1017@ewha.ac.kr

Abstract

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