1 CUSIP NO. 67060V107 SCHEDULE 13G Page 8 of 8 Pages ------------- --- --- JOINT FILING AGREEMENT WHEREAS, the statement or amended statement on Schedule 13G to which this agreement is an exhibit (the "Joint Statement") is being filed on behalf of two...Joint Filing Agreement • February 7th, 2001 • St John William D • In vitro & in vivo diagnostic substances
