From the Department of Medicine, Montefiore Medical Center and The Albert Einstein College of
Medicine, Bronx, NY (Dr Surks); Department of Medicine, University of California-Los Angeles (Drs
Chopra and Solomon); Department of Medicine, University of Minnesota College of Medicine,
Minneapolis (Dr Mariash); and Department of Medicine, University of Southern California School of
Medicine, Los Angeles (Dr Nicoloff).

We are indebted to Monika F. Bayer, PhD, Ian D. Hay, MD, PhD, George G. Klee, MD, PhD, P. Reed
Larsen MD, and Carole A. Spencer, PhD, for their critical review of the manuscript and helpful
suggestions. We thank Evette Gonzalez for preparing the manuscript.