RT Journal Article SR Electronic T1 Lack of clarity about frequency for monitoring renal function in heart failure guidelines JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP dtb.2018.1.0574 DO 10.1136/dtb.2018.1.0574 YR 2017 UL http://dtb.bmj.com/content/early/2017/12/28/dtb.2018.1.0574.abstract AB