Comparison of a salivary/sputum pepsin assay with 24-hour esophageal pH monitoring for detection of gastric reflux into the proximal esophagus, oropharynx, and lung.
Potluri S, Friedenberg F, Parkman HP, Chang A, MacNeal R, Manus C, Bromer MQ, Malik A, Fisher RS, Nugent T, Thangada VK, Kueppers F, Miller LS.
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