52 Studies found for: COPD OR chronic obstructive pulmonary disease OR chronic bronchitis OR emphysema | Recruiting, Not yet recruiting, Available Studies | NIH, U.S. Fed
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Map Legend
Region Name   Number of Studies
World 52  
Africa   [map]   1  
Europe   [map]   1  
North America 47  
Canada   [map]   2   [studies]
United States   [map]   47   [studies]

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Studies with multiple locations are included in each region containing locations.