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associate – v. to group an item or person with others by some common factor
data – n. facts or information used usually to calculate, analyze, or plan something
preterm – adj. born alive before 37 weeks of pregnancy are completed.
(birth) defect – n. a problem with how baby's organs or body parts form, how they work, or how the body turns food into energy.
symptom – n. a change in the body or mind which indicates that a condition or disease is present
chronic – adj. continuing or happening again and again for a long time
income – n. money that is earned from work, investments or business
