When a renter chooses to receive miles in the American Airlines AAdvantage program or the Delta Air Lines SkyMiles program, the Frequent Traveler Service Charge will be calculated based only on the Federal Excise Tax (7.5%) expense incurred by Alamo when it purchases miles from those airlines.
1 Medications, drugs, or substances causing Canker sores (2 listings) 2  Underlying causes of Canker sores. 3  Canker sores as a symptom.  Medical news summaries relating to Causes of Canker sores.
1 Symptoms include white spots inside the mouth or on the tongue, sore throat and difficulty swallowing.  Canker sores â these are small white or yellow center lesions with a red border. They develop in the mouth on the tongue, inside cheek areas, lips, gum line and throat area. They are not contagious.