In this Letter the data, collected by the similar or equal to 100 kg NaI(Tl
) DAMA set-up deep underground in the Gran Sasso National Laboratory of I.N
.F.N. during four annual cycles (57986 kg day statistics), are analyzed in
terms of WIMP annual modulation signature considering a candidate with mixe
d coupling to ordinary matter. (C) 2001 Elsevier Science B.V. All rights re
served.