RT Journal Article SR Electronic T1 Evidence of safety of metformin in people with kidney disease JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP 88 OP 88 DO 10.1136/dtb.2018.8.0653 VO 56 IS 8 YR 2018 UL http://dtb.bmj.com/content/56/8/88.1.abstract AB