The survey, in this pilot phase, focused on adult primary care physicians (PCPs) (family practitioners, internists, geriatricians, and general practitioners) in the Denver and Kansas City areas; on PCPs, cardiologists, and obstetricians/gynecologists in the Memphis area; and on PCPs, cardiologists, gastroenterologists, obstetricians/gyenecologists, and orthopedists in the New York area.