RT Journal Article SR Electronic T1 Formal guidelines including a pill box improved medication adherence for patients with chronic mental illness JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 47 OP 47 DO 10.1136/ebn.2.2.47 VO 2 IS 2 YR 1999 UL http://ebn.bmj.com/content/2/2/47.abstract AB