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Article History

Received: 19 December 2017

Accepted: 1 March 2018

First Online: 9 March 2018

Ethics approval

: Animal use and study design were approved by the Ethics Committee of the Institute of Parasitology of the Slovak Academy of Sciences in accordance with the national legislation in Slovakia - Animal Welfare Act No. 23/2009. Permission to collect study samples was granted by participating sheep farmers. The owner of the animals gave verbal consent to carry out of the experiment.

: Not applicable.

: The authors declare that they have no competing interests.

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