15· \\·or Jd Health ?rgani7:~tion (1996)~ \·ec_tor B_ionom~c:s in 7!1-r Epiclcminlogy d Coricrol o J. \lc1/ano Parr !fl: 1he 11 UO 5011cli-f-. 0;;1 t\1;10 Rcgio,1 ond rite ~ ;iescern Puc Uic Rcyiun. \ ·0111 me 11: l. c:11Jin9 Urcrol11rr-C<"rt rrc1/ Rcuiew J970-1994, 