Thromboelastography (TEG) In the Intrauterine Growth Restriction (IUGR) Neonatal Population by Gestational Age

Inclusion Criteria: Participants included for medical record data and blood sample collection will be: * Neonates diagnosed with intrauterine growth restriction, defined as a weight below the estimated 10th percentile and accordingly identified as such in any peripartum evaluation AND * May have additional comorbidities AND * Full term IUGR neonates will be have a gestational age of 37 weeks or greater OR * Preterm IUGR neonates will have a gestational age less than 37 weeks OR * Preterm IUGR neonates will have a gestational age less than 37 weeks Participants included for medical record review data collection ONLY will be: Mothers of eligible neonates Exclusion Criteria: * Constitutionally (familial) low birth weight, i.e. small for gestational age, babies OR * Born to women with life threatening coexisting morbidities (this may include severe pre-eclampsia, diabetes or suspected infections including HIV or herpes) OR * Neonates with an abnormal delivery or perinatal course including: Fetal demise, death in the first week after birth, neonatal encephalopathy, meconium aspiration, and physical birth injuries (fractures and brachial plexus injuries)