3Parameswaran K, Anvari M, Efthimiadis A, et al. Lipid-laden macrophages in induced sputum are a marker of oropharyngeal reflux and possible gastric aspiration. Eur Respir J, 2000,16 (6) : 1119.
4Bechi P,Pucciani F,Baldini F,et al.Long term ambutory enterogastric reflux monitoring.Validation of a new tberoptic technique. Dig Dig Sci, 1993,38(7) : 1297.
5Stein HJ, Feussner H, Kauer W, et al. Alkaline gastroesophageal reflux., assessment by ambulatory esophageal aspiration and pH monitoring. Am J Surg,1994,167(1):163.
6Nehra D,Howell P,Williams CP,et al. Toxic bile acids in gastro-oesophageal reflux disease:influence of gastric acidity.Gut, 1999,44(5 ) : 598.