RT Journal Article SR Electronic T1 How much is enough in making clinical decisions? JF European Journal of Hospital Pharmacy JO Eur J Hosp Pharm FD British Medical Journal Publishing Group SP 1 OP 1 DO 10.1136/ejhpharm-2014-000606 VO 22 IS 1 A1 Phil Wiffen YR 2015 UL http://ejhp.bmj.com/content/22/1/1.abstract AB