| 1. (Title = bronchoscopy OR (Topic = bronchoscopy OR MeSH Heading:exp = Bronchoscopy)) OR ( MeSH Major Topic:exp = bronchoscopy) |
| 2. (Title = bronchoscopic OR Topic = bronchoscopic) OR MeSH Major Topic = bronchoscopic |
| 3. (Title = bronchial OR (Topic = bronchial OR MeSH Heading:exp = Bronchi)) OR MeSH Major Topic = bronchial |
| 4. (Title = endobronchial OR Topic = endobronchial) OR MeSH Major Topic = endobronchial |
| 5. ((Title = endobronchial AND Title = ultrasonography) OR (Topic = endobronchial AND (Topic = ultrasonography OR MeSH Heading:exp = Ultrasonography))) OR MeSH Major Topic = endobronchial ultrasonography |
| 6. ((Title = endobronchial AND Title = ultrasound) OR (Topic = endobronchial AND (Topic = ultrasound OR MeSH Heading:exp = Ultrasonography))) OR MeSH Major Topic = endobronchial ultrasound |
| 7. (Title = ultrasound OR (Topic = ultrasound OR MeSH Heading:exp = Ultrasonography)) OR MeSH Major Topic = ultrasound |
| 8. (Title = ultrasonography OR (Topic = ultrasonography OR MeSH Heading:exp = Ultrasonography)) OR ( MeSH Major Topic:exp = ultrasonography) |
| 9. (Title = sonography OR (Topic = sonography OR MeSH Heading:exp = Ultrasonography)) OR MeSH Major Topic = sonography |
| 10. (Title = sonographic OR Topic = sonographic) OR MeSH Major Topic = sonographic |
| 11. (Title = ultrasonographic OR Topic = ultrasonographic) OR MeSH Major Topic = ultrasonographic |
| 12. (Title = ultrasonographic OR Topic = ultrasonographic) OR MeSH Major Topic = ultrasonographic |
| 13. #6 OR #5 OR #4 OR #3 OR #2 OR #1 |
| 14. #11 OR #10 OR #9 OR #8 OR #7 OR #6 OR #5 |
| 15. #14 AND #13 |