Received: 16 August 2019
Accepted: 9 December 2019
First Online: 19 December 2019
Ethics approval and consent to participate
: The University of Utah Institutional Review Board approved the study. All participants provided informed consent under an approved protocol and all experiments were carried out in an approved manner.
: Not applicable.
: TGJ, KIA, and DTC hold IP associated with epigenetic germ line age calculation. TGJ, KIA, DTC, JMH, and AWP hold equity in a company that will soon offer sperm epigenetic screening for aging and fertility. ERJ, ASH, KRS, and HAH have nothing relevant to declare.