_:nb972bbbb2ed34d38b25970b240455071xb0
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"Schachter H. &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/books/NBK409/&quot; data-component=&quot;link&quot; data-source=&quot;inlineLink&quot; data-type=&quot;externalLink&quot; data-ordinal=&quot;1&quot;&gt;Indigestion and Heartburn&lt;/a&gt;. In: Walker HK, Hall WD, Hurst JW, editors. Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition. Boston: Butterworths. Chapter 83. Available from: https://www.ncbi.nlm.nih.gov/books/NBK409/"
<https://www.verywellhealth.com/abdominal-pain-when-to-see-a-doctor-1745398>