Participants - When?

Whenever you can fit this in. If you complete the questionnaire by post and would also like to have the skin testing, breathing tests, etc done in hospital we would prefer that the hospital visit was no more than one month later than the date when you filled in the questionnaire. As you know asthma changes over time and we need to be as sure as we can that the information on the questionnaires and the testing done in hospital are all collected at the same point in time.


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