Comparison of mannitol and citric acid cough provocation tests

Citric acid has been used as a cough provocation test for decades. However, the methods of administration have not been standardized. Inhaled mannitol is a novel cough provocation test, which has regulatory approval and can be performed utilizing a simple disposable inhaler in a standardized manner.To compare the mannitol and citric acid cough provocation tests with respect to their ability to identify subjects with chronic cough and their...