Adrenergic Cholinergic Enteric Measures/Mapping

1. Patients seen who had autonomic and enteric profiling (Adrenergic Cholinergic Enteric Measures/Mapping=ACEM) from 2012-2019 at the U of Louisville. 2. Results of the physiologic measures of ACEM had the results recorded. 3. ACEM is compared to standardized gastric emptying values as the primary measure. 4. ACEM is also compared to metabolic measures of weight, height and thus BMI as a secondary measure. 5. ACEM is aloes compared with standardized gastrointestinal symptoms by a traditional patient recorded outcome as another secondary measure. Other sites may be added if they have identical IRB and/or data sharing agreements with the University of Louisville.