EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated January 25, 2002 (except with respect to the matters discussed in Note 19, as to which the date is March 5, 2002) relating to the financial statements, which appears in the Annual Report to Shareholders, which is incorporated in the Annual Report on Form 10-K for the year ended December 31, 2001. We also consent to the reference to us under the heading "Experts" in such Registration Statement. /s/ PRICEWATERHOUSECOOPERS LLP Baltimore, Maryland March 27, 2002