 Patients will be recruited by Dr. Nicholas Shaheen and his colleagues or by other study personnel prior to their routine care endoscopy at UNC. An investigator, study coordinator, or other personnel trained in the protocol and referenced in the IRB application will obtain consent during the patients visit in the GI clinic or prior to an upper endoscopy. Potential subjects will have an opportunity to carefully review the consent form, the details of the study will be reviewed verbally, and all questions will be answered to the satisfaction of the patient. Only English-speaking adults with the ability to consent will be eligible for enrollment in this study. After the subject signs the consent, a copy of the signed consent will be provided to the subject and the coordinator will collect demographic and historical information from the patient pertaining to illnesses, medication and other relevant information. The consent process will be documented in the subjects research file. 