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4850 studies found for:    "Lung Diseases, Obstructive"
4850 studies found, shown on map.
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Map Legend
Region Name   Number of Studies
World 4850  
Africa   [map]   168  
Central America   [map]   71  
East Asia   [map]   445  
Japan 133   [studies]
Europe   [map]   1992  
Middle East   [map]   201  
North America 1917  
Canada   [map]   469   [studies]
Mexico 116   [studies]
United States   [map]   1623   [studies]
North Asia   [map]   256  
Pacifica   [map]   177  
South America   [map]   311  
South Asia   [map]   77  
Southeast Asia   [map]   133  

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Studies with no locations are not included in the counts or on the map.

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