Exhibit 23

Consent of Independent Public Accountants

As independent public accountants, we hereby consent to the incorporation by reference of our report included in this Form 8-K, into the Company's previously filed Registration Statements (as amended, as applicable) File Numbers 33-4041, 33-9570, 33-12119, 33-15680, 33-37827, 33-56762, 33-65123, 33-83402, 333-07413, 333-10919, 333-10965, 333-30947, 333-57651, 333-66149, 333-47633, 333-66147, 333-67341, 333-68621, 333-90133, 333-90139, 333-35102, 333-35274, 333-41140, 333-41138, 333-63274, 333-66980 and 333-70912.

/s/  ARTHUR ANDERSEN LLP

San Diego, California
March 29, 2002