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All participants signed a written informed consent, and when the subject was a minor (age\u2009<\u200918\u00a0years) prior parental or legal guardian permission was gathered to allow the child to participate in the study. All the procedures were approved by the Ethical Committee of the Jessenius Faculty of Medicine, Comenius University, Martin, Slovakia.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}