Data onmaternal demographics and history of chronic hypertension
were collected from the clinical records. The use of ART, including artificial
insemination, in-vitro fertilization (IVF), intracytoplasmic sperm
injection, and oocyte donation,was also recorded. The pregnancy duration
(completed weeks of pregnancy) was determined based on the
insemination or embryo transfer date or, in spontaneous pregnancies,
on the first-trimester ultrasound findings.