RT Journal Article SR Electronic T1 Oxycodone administered as postpartum pain relief is associated with maternal report of infant central nervous system depression in breastfed infants JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP ebmed-2012-100777 DO 10.1136/ebmed-2012-100777 A1 Wibke Christina Jonas YR 2012 UL http://ebm.bmj.com/content/early/2012/06/25/ebmed-2012-100777.abstract AB