Notified on 1 February 2008, this merger operation consists of the acquisition, by the undertaking COMPANHIA DE SEGUROS TRANQUILIDADE SA (hereafter "TRANQUILIDADE") and the undertaking UNITEDHEALTH GROUP INTERNATIONAL BV (hereafter "UNITEDHEALTH GROUP"), of joint control of ADVANCECARE - GESTÃO DE SERVIÇOS DE SAÚDE SA (hereafter "ADVANCECARE").