3Wingate D, Hongo M, Kellow J, Lindberg G,Smout A. Disorders of gastrointestinal motility:towards a new classification. J Gastroenterol Hepatol, 2002, 17 Suppl: S1～S14.
4Lagergren J, Bergstrom R, Lindgren A, Nyren O.Symptomatic gastroesophageal reflux as a risk factor for esophageal adenocarcinoma. N Engl J Med, 1999, 340: 825～831.
5Fass R, Ofman JJ. Gastroesophageal reflux disease - should we adopt a new conceptual framework? Am J Gastroenterol, 2002, 97: 1901～1909.
6Breumelhof R, Smout AJ. The symptom sensitivity index: a valuable additional parameter in 24-hour esophageal pH recording. Am J Gastroenterol, 1991, 86: 160～164.
7Kazem I. A new scintigraphic technique for the study of the esophagus. Am J Roentgenol Radium Ther Nucl Med, 1972, 115: 681～688.
8Pehlivanov N, Liu J, Kassab GS, Puckett JL,Mittal RK. Relationship between esophageal muscle thickness and intraluminal pressure: an ultrasonographic study. Am J Physiol Gastrointest Liver Physiol, 2001, 280: G1093～G1098.
9Balaban DH, Yamamoto Y, Liu J, Pehlivanov N,Wisniewski R, DeSilvey D, Mittal RK. Sustained esophageal contraction: a marker of esophageal chest pain identified by intraluminal ultrasonography. Gastroenterology, 1999, 116: 29～37.
10Locke GR 3rd, Talley NJ, Fett SL, Zinsmeister AR, Melton LJ 3rd. Prevalence and clinical spectrum of gastroesophageal reflux: a populationbased study in Olmsted County, Minnesota. Gastroenterology, 1997, 112: 1448～1456.
