| Views | |
| Research Articles (Pulmonology) | 85 |
| November 2012 | December 2012 | January 2013 | February 2013 | March 2013 | April 2013 | May 2013 | |
| Research Articles (Pulmonology) | 13 | 11 | 21 | 13 | 6 | 3 | 6 |
| Views | |
| United States of America | 49 |
| China | 15 |
| Canada | 12 |
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| Korea | 1 |
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| Views | |
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| Seoul | 1 |