TY - JOUR KW - clinical outcomes KW - Experimental/theoretical treatment KW - Health care industry KW - Mental depression KW - patients KW - primary care KW - Quality control KW - Quality of service KW - Statistical analysis KW - United States AU - Kenneth B. Wells AU - Lingqi Tang AU - Jeanne Miranda AU - Bernadette Benjamin AU - Naihua Duan AU - Cathy D. Sherbourne A1 - BT - Health services research C5 - Financing & Sustainability CP - 6 IS - 6 JF - Health services research PB - (c) 2008 Health Research and Educational Trust PY - 2008 SN - 0017-9124 SP - 1952 EP - 1974 EP - T1 - The effects of quality improvement for depression in primary care at nine years: Results from a randomized, controlled group-level trial T2 - Health services research TI - The effects of quality improvement for depression in primary care at nine years: Results from a randomized, controlled group-level trial U1 - Financing & Sustainability VL - 43 VO - 0017-9124 Y1 - 2008 ER -