ART	Assisted Reproductive Technology
BMI	Body Mass Index
CD	Cesarean Delivery
CI	Confidence Interval
DC	Dichorionic
GDM	Gestational Diabetes Mellitus
GHTN	Gestational Hypertension
GIFT	Gamete Intrafallopian Transfer
HIE	Hypoxic Ischemic Encephalopathy
ICP	Intrahepatic Cholestasis of Pregnancy
ICSI	Intracytoplasmic Sperm Injection
IUFD	Intrauterine Fetal Demise
IUGR	Intrauterine Growth Restriction
IUI	Intrauterine Insemination
IVF	In Vitro Fertilization
IVH	Intraventricular Hemorrhage
LBW	Low Birth Weight
MC	Monochorionic
NEC	Necrotizing Enterocolitis
NICU	Neonatal Intensive Care Unit
NIH	National Institutes of Health
N/R	Not Reported
OHSS	Ovarian Hyperstimulation Syndrome
OR	Odds Ratio
OS	Ovarian Stimulation
PPH	Postpartum Hemorrhage
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
PROM	Premature Rupture of Membranes
PROSPERO	International Prospective Register of Systematic Reviews
PROST	Pronuclear Stage Tubal Transfer
RDS	Respiratory Distress Syndrome
SD	Standard Deviation
SGA	Small for Gestational Age
TTTS	Twin-to-Twin Transfusion Syndrome
VLBW	Very Low Birth Weight
ZIFT	Zygote Intrafallopian Transfer