Medically Assisted Reproduction and Birth Outcomes: A Within-Family Analysis Using Finnish Population Registers

(Abstracted from Lancet 2019;393:1225–1232) Medically assisted reproduction—that is, reproduction brought about through treatments such as ovulation induction, artificial insemination, in vitro fertilization (IVF), or intracytoplasmic sperm injection with fresh or frozen embryo transfer—has resulted in the birth of more than 5 million children. Although previous studies have consistently found that children born after medically assisted...