EXHIBIT 23.1 CONSENT OF DELOITTE & TOUCHE LLP, INDEPENDENT AUDITORS We consent to the incorporation by reference in the Registration Statements (Form S-3 Nos. 333-42308, 333-44204, 333-35024, 333-34648, 333-31450, 333-86951, 33-86930, 33-90392, 33-96620, 33-97490, 333-15519 and 333-55989), and in the Registration Statements (Form S-8 Nos. 333-48110, 333-45118, 333-40508, 333-44212, 333-35276, 333-34622, 333-94999, 333-92885, 333-87039, 33-41027, 33-80988, 333-13387, 33-80992, 33-94790, 333-13359, 333-34671, 333-13357, 333-55983 and 333-55991) of our report January 17, 2000 (November 21, 2000 as to Note 2 and 14) appearing in this Current Report on Form 8-K. Vancouver, British Columbia, Canada November 29, 2000