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Pohl, Daniel; Ciolino, Jody; Roberts, Jason; Savarino, Edoardo; Freeman, Janice; Nietert, Paul J; Tutuian, Radu; Castell, Donald (2012). Functional aspects of distal oesophageal spasm: the role of onset velocity and contraction amplitude on bolus transit. Digestive and liver disease, 44(7), pp. 569-75. Amsterdam: Elsevier 10.1016/j.dld.2012.02.003
