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. 2021 Oct 30;27(4):533–539. doi: 10.5056/jnm20088

Figure 1.

Figure 1

Stepwise diagnostic algorithm of patients according to main esophageal symptoms. GER, gastroesophageal reflux; NCCP, non-cardiac chest pain; N/V, nausea/vomiting; PPI, proton pump inhibitor.