Volume 123, Issue 6, (December 2002) Ewald of the Ewald tube William S. Haubrich, M.D. Gastroenterology Volume 123, Issue 6, (December 2002) DOI: 10.1053/gast.2002.1231803 Copyright © 2002 American Gastroenterological Association Terms and Conditions
Copyright holder unknown Copyright holder unknown. Photo obtained from the National Library of Medicine Website (http://www.nlm.nih.gov). Gastroenterology 2002 123, DOI: (10.1053/gast.2002.1231803) Copyright © 2002 American Gastroenterological Association Terms and Conditions