1. Maternal mortality rates in the United States, 2021;Hoyert;NCHS Health E-Stats,2023
2. Normal endocrine physiology of hypothalamic hormones during ovulation, pregnancy, and lactation;Xu,2020
3. Placental transfer in health and disease;Wright,2011
4. Trophoblast-uterine interactions at implantation;Aplin;Reprod Biol Endocrinol,2004
5. Embryogenesis and fetal morphological developments;Cunningham,2018