My wife (57 year old) has had a chronic cough accompanied by occassional sneezing and gagging for over 3 years. She has been to every specialist we can think of - lung, gastro, GP, heart, throat, allergist, etc. She just had tests done for Gerd which included the Bravo monitor and the test was negative. She has had numeorus x-rays, MRIs, CT scans, ultrasounds and any other tests that can look inside her lungs, ears, nose, esaphogus, stomach & throat.