<unk>  is the ability of a fetus to survive outside the uterus.<unk>  is generally considered to begin at 24 weeks gestational age, since at this point in the pregnancy, most infants survive a preterm birth.
Fetal viability
Embryo quality
Fetal circulation
Infant Mortality Rate
Infant mental health
Perinatal mortality
Fetal movement
Placental microbiome