1 “... to 1999, the Cochrane Controlled Trials Register and Library, and national experts. STUDY SELECTION: All...”

2 “... to 1999, the Cochrane Controlled Trials Register and Library, and national experts. STUDY SELECTION: All...”

3 “...PURPOSE: Both the US Preventive Services Task Force (USPSTF) and the National Cholesterol Education...”

4 “...PURPOSE: Both the US Preventive Services Task Force (USPSTF) and the National Cholesterol Education...”