1.

Diagnostic certainty, co-morbidity and medication in a primary care population with presumed airway obstruction : the DIDASCO2 study.

2.

Diagnostic certainty, co-morbidity and medication in a primary care population with presumed airway obstruction : the DIDASCO2 study.

3.

Diagnostic certainty, co-morbidity and medication in a primary care population with presumed airway obstruction : the DIDASCO2 study.