id	keyword
american_scientific_journal-4708	birth
american_scientific_journal-4708	trauma
american_scientific_journal-4708	study
american_scientific_journal-4708	risk
american_scientific_journal-4708	delivery
american_scientific_journal-4708	factors
american_scientific_journal-4708	fetal
american_scientific_journal-4708	injuries
american_scientific_journal-4708	deliveries
american_scientific_journal-4708	journal