1. Center for Stem Cell Engineering, Department of Basic Research Laboratories; Texas Heart Institute at St. Luke's Episcopal Hospital; Houston Texas USA
2. In Vitro Fertilization Center; Affiliated Hospital of Hainan Medical University; Haikou Hainan People's Republic of China
3. Department of Biology and Biochemistry; University of Houston; Houston Texas USA
4. Department of Veterinary & Animal Sciences; University of Massachusetts; Amherst Massachusetts USA