Received: 24 July 2018
Accepted: 7 September 2018
First Online: 19 September 2018
Compliance with ethical standards
: The authors of this paper have no commercial conflict of interest to disclose pertaining to the subject matter. Dr. Schiewe serves as a Scientific & Technical Advisor to the California Cryobank Life Sciences. Dr. VerMilyea is a Scientific Advisor to Irvine Scientific.