Respiratory symptoms questionnaire for asthma epidemiology: validity and reproducibility.
| Main Authors: | , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
BMJ Publishing Group
1993
|
| Main Authors: | , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
BMJ Publishing Group
1993
|