Database | Search terms | | | |
PubMed | COPD, COAD, pulmonary emphysema and associated MeSH terms | Heliox | Exercise | Dyspnoea |
Ovid/Medline | COPD with associated MeSH terms | Dyspnoea | Exercise and associated MeSH terms | Heliox and associated MeSH terms |
Scopus | COPD, COAD, pulmonary emphysema and associated MeSH terms | Dyspnoea or dyspnea | Exercise or physical exercise | Heliox |
Web of Science (Web of Knowledge) | COPD, COAD, pulmonary emphysema and associated MeSH terms | Dyspnoea or dyspnea | Exercise or physical exercise | Heliox |
CINAHL (EBSCOhost) | COPD, COAD, pulmonary emphysema and associated MeSH terms | Dyspnoea and associated MeSH terms | Exercise, physical exercise and associated MeSH terms | Heliox |
Academic Search File (EBSCOhost) | COPD, COAD, pulmonary emphysema and associated MeSH terms | Dyspnoea and associated MeSH terms | Exercise, physical exercise and associated MeSH terms | Heliox |
EMBASE 1974 to present | COPD and associated MeSH terms | Dyspnoea | Exercise and associated MeSH terms | Heliox and associated MeSH terms |
All EBM reviews | COPD and associated MeSH terms | Dyspnoea | Exercise and associated MeSH terms | Heliox and associated MeSH terms |