Patient characteristics
nausea or vomiting, abdominal pain, gastrointestinal complaints
ACID REFLUX
A total of 30 subjects (mean age 31 years, range 19–65 years; male 66.7%) were enrolled and analyzed, which consisted of 12 asymptomatic volunteers and 18 patients with gastrointestinal complaints including abdominal pain, distention, acid reflux and nausea or vomiting. 4 subjects had a history of 