| Conference | Years searched |
| American Academy of Allergy, Asthma and Immunology | 2001 onwards |
| American Thoracic Society | 2001 onwards |
| Asia Pacific Society of Respirology | 2004 onwards |
| British Thoracic Society Winter Meeting | 2000 onwards |
| Chest Meeting | 2003 onwards |
| European Respiratory Society | 1992, 1994, 2000 onwards |
| International Primary Care Respiratory Group Congress | 2002 onwards |
| Thoracic Society of Australia and New Zealand | 1999 onwards |
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