1. Paul Shekelle ( ) is director of the Evidence-Based Practice Center at RAND Health in Santa Monica, California, and a staff physician at the West Los Angeles Veterans Affairs Medical Center. Eduardo Ortiz is associate chief of staff and attending physician at the Washington, D.C., Veterans Affairs Medical Center and an associate professor of medicine at the George Washington University School of Medicine in Washington, D.C. Sydne Newberry is a research communications analyst in the RAND...