- Correspondence to Dr Lukasz Krupa, Department of Gastroenterology and Hepatology with Internal Disease Unit, Specialist Voivodship Hospital Frederic Chopin in Rzeszow, Rzeszow, Poland;
- Received March 31, 2020
- Revision received October 27, 2020
- Accepted February 3, 2021
- First published March 2, 2021.
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