Received: 13 December 2017
Accepted: 23 February 2018
First Online: 1 March 2018
: The study was approved by the Institutional Animal Care and Use Committee of Iowa State University. An informed consent was obtained from all patients’ owners, and the study adhered to a high standard (best practice) of veterinary care.
: Not applicable.
: The authors declare that they have no competing interests.
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