EX-99 4 w020507c.txt EXHIBIT 99.3 JOINT FILERS' SIGNATURES Exhibit 99.3 JOINT FILERS' SIGNATURES WARBURG PINCUS IX, LLC By: Warburg Pincus Partners, LLC, its Sole Member, By: Warburg Pincus & Co., its Managing Member By: /s/ Scott A. Arenare Date: February 5, 2007 ------------------------------------------ ---------------- Name: Scott A. Arenare Title: Partner WARBURG PINCUS PARTNERS, LLC By: Warburg Pincus & Co., its Managing Member By: /s/ Scott A. Arenare Date: February 5, 2007 ------------------------------------------ ---------------- Name: Scott A. Arenare Title: Partner WARBURG PINCUS, LLC By: /s/ Scott A. Arenare Date: February 5, 2007 ------------------------------------------ ---------------- Name: Scott A. Arenare Title: Managing Director WARBURG PINCUS & CO. By: /s/ Scott A. Arenare Date: February 5, 2007 ------------------------------------------ ---------------- Name: Scott A. Arenare Title: Partner By: /s/ Scott A. Arenare Date: February 5, 2007 ------------------------------------------ ---------------- Name: Charles R. Kaye By: Scott A. Arenare, Attorney-in-Fact By: /s/ Scott A. Arenare Date: February 5, 2007 ------------------------------------------ ---------------- Name: Joseph P. Landy By: Scott A. Arenare, Attorney-in-Fact