title: Patterns of attachment among preterm infants of varying biological risk.
mesh_terms: D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009034:Mother-Child Relations; D009769:Object Attachment; D012127:Respiratory Distress Syndrome, Newborn / Q000523:psychology*; D012306:Risk