Professor Yang has worked in the field of assisted reproductive technology in North America for over 25 years with extensive training and research experiences. He is well-known for his pioneering work on clinical studies on Preimplantation Genetic Testing for Aneuploidy (PGT-A) and Time-lapse (TL). He was a full-time Clinical Professor at University of Pittsburg School of Medicine and the Director of Andrology, Embryology and Endocrinology Laboratories in the Great Pittsburg Medical Center (GPMC). Professor Yang is the Co-Founder and Secretary General of International Society of Reproductive Genetics (ISRG) and the Co-Chairman of Membership Committee of Preimplantation Genetic Diagnosis International Society (PGDIS).