PT - JOURNAL ARTICLE AU - Richard Baker TI - Managing quality in primary health care: the need for valid information about performance AID - 10.1136/qhc.9.2.83 DP - 2000 Jun 01 TA - Quality in Health Care PG - 83--83 VI - 9 IP - 2 4099 - http://qualitysafety.bmj.com/content/9/2/83.short 4100 - http://qualitysafety.bmj.com/content/9/2/83.full SO - Qual Health Care2000 Jun 01; 9