


AG US GROUP SERVICES INC.
MSD PARTNERS, L.P.
PHILA AREA INDPDNT SCHOOL BUSINESS OFFICERS ASSC HEALTH BENEFIT TR
SARATOGA MANAGEMENT COMPANY LLC
PUBLIC RESOURCES ADVISORY GROUP, INC.
A.R.T. ADVISORS, L.L.C.
A.C. ISRAEL ENTERPRISES, INC.
MORGENS, WATERFALL, VINTIADIS AND COMPANY, INC.
KINGDON CAPITAL MANAGEMENT LLC
KAHN BROTHERS GROUP, INC.