Key points are not available for this paper at this time.
From the Department of Medicine, The University of Texas, Health, Science Center at San Antonio, and Audie L. Murphy Memorial Veterans, Hospital, San Antonio, Texas, the Division of Cardiology, Cooper HospitallUniversity Medical Center, Robert Wood Johnson Medical School at Camden, Camden, New Jersey, and the Department of Epidemiology, School of Public Health, University of North Carolina, Chapel Hill, North Carolina.
Lawrence et al. (Wed,) studied this question.