Informed Consent Statement
This study was conducted in accordance with the Declaration of Helsinki and approved by the Ethics Committee of the Nicolaus Copernicus University in Toruń at the Collegium Medicum Ludwik Rydygier in Bydgoszcz (KB 382/2017, date of approval, 13 June 2017). All subjects were informed about the purpose of the tests and procedures, and they voluntarily signed consent forms to participate in the experiment. The trial was not masked, but staff who collected data on study outcomes were unaware of study group assignments.