Laryngopharyngeal pH monitoring (Restech) - Correlation with conventional 24-hour esophageal pH monitoring using a large patient collective of 100 patients with suspected gastroesophageal reflux disease - SAGES Abstract Archives
Figure 1 from Esophageal pH and Combined Impedance-pH Monitoring in Children | Semantic Scholar
Differentiating esophageal sensitivity phenotypes using pH–impedance in intensive care unit infants referred for gastroesophageal reflux symptoms | Pediatric Research
Esophageal 24-hour pH/ impedance reflux monitoring – BGC medical center
pH Testing - Dr Paul Froomes - Consultant Gastroenterologist | Melbourne