[1] Kaiser Permanente, Portland, OR
[2] Duke University, Medical Center, Durham, NC
[3] Shapiro, Sher, Guinot and Sandler, Baltimore, MD
[4] University of Hawaii at Manoa, Honolulu, HI
[5] University of Maryland, Medical Center, Baltimore, MD
[6] Johns Hopkins Hospital, Baltimore, MD
[7] Reprint Department, Mary Ann Liebert, Inc., New Rochelle, NY 10801-5215