Ahmed S S, Arnett F C, Smith C A, Ahn C, Reveille J D
Department of Internal Medicine, Division of Rheumatology and Clinical Immunogenetics, University of Texas Health Science Center at Houston, 6431 Fannin, Houston, TX 77030, USA.
Medicine (Baltimore). 2001 Jul;80(4):271-8. doi: 10.1097/00005792-200107000-00006.