PT - JOURNAL ARTICLE AU - Derek G Waller TI - Rational prescribing: the principles of drug selection and assessment of efficacy AID - 10.7861/clinmedicine.5-1-26 DP - 2005 Jan 01 TA - Clinical Medicine PG - 26--28 VI - 5 IP - 1 4099 - http://www.rcpjournals.org/content/5/1/26.short 4100 - http://www.rcpjournals.org/content/5/1/26.full SO - Clin Med2005 Jan 01; 5