	warburg pincus starts symbion symb bid warburg pincus capital corp said it has started a tender offer for up to common shares of symbion inc at dlrs each in a newspaper advertisement the firm said the opffer is not conditioned on receipt of any minimum number of shares but is conditioned on holders of nor more than symbion sharesseeking to receive the fair value of their shares under provisions of the utah business corporation act warburg said receipt of shares would raise its interest in symbion to about pct from pct currently and give it control warburg said it reserves the right to buy more than shares if the offer is oversubscribed but has no present intention of doing so it said it has asked symbion to provide its shareholder list to help in disseminating the offer the firm said the offer proration period and withdrawal rights expire april unless extended reuter 
