1. Advanced Cell Technology, Worcester, Massachusetts.
2. Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston Salem, North Carolina.
3. Reproductive Medicine Associates of New Jersey, Morristown, New Jersey.
4. Stem Cell Source, LLC, Houston, Texas.
5. Fertility Specialists of Houston, Houston, Texas.
6. Department of Veterinary Physiology & Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas.