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Raizman, R.E., Neva, F.A., Neva, F.A. et al. Chagasic megaesophagus: Similarity to achalasia by manometrics, radiography, and response to pneumatic dilation. Digest Dis Sci 20, 882–888 (1975). https://doi.org/10.1007/BF01070959
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DOI: https://doi.org/10.1007/BF01070959