title: Premature labor and referral to tertiary care center.
mesh_terms: D000046:Academic Medical Centers; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007752:Obstetric Labor, Premature / Q000175:diagnosis*; D011247:Pregnancy; D012017:Referral and Consultation; D014187:Transportation of Patients