Authors a manuscript using human or animal tests should indicate whether all the procedures were performed according to the ethical standards of the competent Human or Animal Experiments Committee and the World Medical Association International Code of Medical Ethics (Helsinki Declaration, 1975, amended 2000). All experimental animal tests should be in accordance with the EU Directive 2010/63/EU or the National Institutes of Health Guide for the Care and Use of Laboratory Animals  (NIH Publications No. 8023, revised 1978), and subject to specific national animal protection provisions. In the manuscript section “Materials and Methods”, the following information should be included: the test permit details (name of the document, and issuing entity, ordinal number, and date of issue), description of the analgesic and anaesthetic procedures used, as well as methods of animal euthanasia (if applicable). The members of the Editorial Board reserve the right to reject manuscripts that do not comply with the aforementioned requirements. Authors are responsible for their false statements.