RT Journal Article SR Electronic T1 Metformin should not be contraindicated in patients with type 2 diabetes and mild to moderate renal impairment JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 115 OP 115 DO 10.1136/ebmed-2015-110184 VO 20 IS 3 A1 Scheen, André J YR 2015 UL http://ebm.bmj.com/content/20/3/115.abstract AB