What are the indications for 24-hour ambulatory pH and manometry measurement?
J.E. Richter (Cleveland) Full article (members only)

What information can be expected from a combined one-channel pH probe and two-channel pressure probe with automated analysis?
D. Armstrong (Hamilton) Full article (members only)

What is the value of intraluminal impedance measurements in the diagnosis of esophageal motility disorders in GER patients?
J. Fass, B. Dreuw, J. Silny, V. Schumpelick (Aachen) Full article (members only)