Richard E. Stewart, MD is clinical associate professor of medicine, St. Louis University Health Science Center, St. Louis, Missouri.

The study by Kurth and Buring consisted of a prospective analysis among nearly 40 000 women participating in the Women's Health Study.

The study by Høilund-Carlsen and Johansen evaluates the benefits of using myocardial perfusion scintigraphy (MPS) in a new way—as a gatekeeping technique for further invasive diagnostic and therapeutic procedures among patients with stable angina pectoris.