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Table 1 Study summary

From: Altered protease and antiprotease balance during a COPD exacerbation contributes to mucus obstruction

  Time Procedures
Visit 1 day 1; week 1 (within 7 days after start of exacerbation) Sputum collection, pulmonary function test, chest x-ray, blood sample, physical examination
Visit 2 days 40–46, week 5–6 Sputum collection, pulmonary function test, blood sample