Steven Woloshin, MD, MS, Lisa Schwartz, MD, MS,andH. Gilbert Welch, MD, MPH,are general internists, faculty members at Dartmouth Medical School, and researchers in the VA Outcomes Group, Department of Veterans Affairs, White River Junction, Vermont. Woloshin and Schwartz have written many articles together for leading medical journals, and Welch is the author ofShould I Be Tested for Cancer? Maybe Not and Here's Why(UC Press).