1. Twenty-four hour pH-monitoring of the distal esophagus, a quantitative measure of gastroesophageal reflux;Johnson, L.F.; DeMeester, T.R.;Am J Gastroenterol,1984
2. Ambulatory 24 hour intraesophageal pH-monitoring in the diagnosis of gastrooesophageal reflux disease;Johnsson, F.; Joelsson, B.; Isberg, P.-E.;Gut,1987
3. Correlation between manometric and pH-tests for gastro-oesophageal reflux;Stanciu, C.; Hoare, R.C.; Bennett, JR;Gut,1977
4. Ambulatory monitoring of oesophageal pH in reflux oesophagitis using a portable radiotelemetry system;Branicki, F.J.; Evans, J.F.; Ogilvie, A.L.; Atkinson, M.; Hardcastle, J.D.;Gut,1982
5. Symptoms and endoscopic findings in the diagnosis of gastroesophageal reflux disease;Johnsson, F.; Joelsson, B.; Gudmundsson, K.; Greiff, L.,1987