EXHIBIT 99.1 PURCHASE AGREEMENT THIS PURCHASE AGREEMENT (this "Agreement"), dated as of November 27, 2001 by and between the UNIHEALTH FOUNDATION (the "Seller") and AQUA WELLINGTON NORTH AMERICAN EQUITIES FUND, LTD., a limited liability company...Purchase Agreement • December 11th, 2001 • Unihealth Foundation • Hospital & medical service plans • Delaware
