1. US Public Health Service, Commissioned Corps, Inactive Reserve, Blacksburg, VA 24060, USA
2. Department of Biomedical Engineering, University of Alberta, Edmonton, AB T6G 1Z2, Canada
3. Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, P.O. Box 208063, New Haven, CT 06520, USA
4. CryoBioPhysica Inc., Chevy Chase, MD 20815, USA