Kim TH, Lee KJ, Yeo M, Kim DK, Cho SW. Pepsin detection in the sputum/saliva for the diagnosis of gastroesophageal reflux disease in patients with clinically suspected atypical gastroesophageal reflux disease symptoms. Digestion. 2008;77(3-4):201–6. doi: 10.1159/000143795. PMID: 18617742.
Pepsin Detection in the Sputum/Saliva for the Diagnosis of Gastroesophageal Reflux Disease in Patients with Clinically Suspected Atypical Gastroesophageal Reflux Disease Symptoms