Walter Sonnenberg

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The American Journal of Physiology: Gastrointestinal and Liver Physiology (ISSN-0193-1857) is published monthly (two volumes a year) by the American Physiologi-tions from outside the United States are payable in U.S. currency or full equivalent. Subscriptions are accepted on a calendar-year basis only. Single Copies; Back Issues: When available, $15.00 each(More)
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