1 Cooperative Studies Program Informatics Center, Massachusetts Veterans Epidemiology Research and Information Center, Boston, Massachusetts.
2 University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; Dermatology Section, Veterans Affairs Boston Healthcare System, Jamaica Plain, Massachusetts; Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts.
3 Dermatology Section, Veterans Affairs Boston Healthcare System, Jamaica Plain, Massachusetts; Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts.
4 Department of Medicine, Veterans Affairs Boston Healthcare System, Boston, Massachusetts.
5 Cooperative Studies Program Informatics Center, Massachusetts Veterans Epidemiology Research and Information Center, Boston, Massachusetts; Section of General Internal Medicine, Department of Medicine, Boston Medical Center, Boston, Massachusetts; Section of Hematology, Veterans Affairs Boston Healthcare System, West Roxbury, Massachusetts.
6 Cooperative Studies Program Informatics Center, Massachusetts Veterans Epidemiology Research and Information Center, Boston, Massachusetts; Division of Aging, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.
7 Tennessee Valley Healthcare System Veterans Affairs Medical Center, Nashville, Tennessee; Department of Dermatology, Vanderbilt University Medical Center, Nashville, Tennessee; Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.
8 Cooperative Studies Program Informatics Center, Massachusetts Veterans Epidemiology Research and Information Center, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts; Department of Medicine, Veterans Affairs Boston Healthcare System, Boston, Massachusetts.
9 Dermatology Section, Veterans Affairs Boston Healthcare System, Jamaica Plain, Massachusetts; Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts. Electronic address: rhartman@bwh.harvard.edu.