RT Journal Article SR Electronic T1 Metformin is not significantly different from insulin for preventing fetal macrosomia in women with gestational diabetes JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 88 OP 89 DO 10.1136/ebm.2011.100121 VO 17 IS 3 A1 Hyer, Steve L YR 2012 UL http://ebm.bmj.com/content/17/3/88.abstract AB