title: Primary esophageal motility disorders.
authors.forename: R
authors.initials: R
authors.lastname: Hansen
authors.forename: J
authors.initials: J
authors.lastname: Kellow
authors.forename: A
authors.initials: A
authors.lastname: Malcolm
mesh_terms: D003937:Diagnosis, Differential; D015154:Esophageal Motility Disorders / Q000175:diagnosis* / Q000503:physiopathology*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008365:Manometry