| #1 ILD:MISC1 |
| #2 MeSH DESCRIPTOR Oxygen |
| #3 MeSH DESCRIPTOR Oxygen Inhalation Therapy Explode All |
| #4 (oxygen* NEAR3 (therap* or ambulat* or portable* or short* or burst* or inhal*)) |
| #5 (oxygen* NEAR5 (palliative* or symptom* or exercis*)) |
| #6 MeSH DESCRIPTOR Ambulatory Care |
| #7 #2 or #3 or #4 or #5 or #6 |
| #8 #1 and #7 |
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