0120-0488 0120-0488 S0120-04882003000200004 00 12 2003 00 12 2003 29 2 137 142

1993 86 991 1000 1996 76 325-334 1993 2 1 1 1-6 1995 49 6 6 1163-1171 1996 12 5 5 169-170 2001 96 8 8 1043-1048 1986 112 629-647 2000 62 4 4 460-465 1999 6 601-616 1985 76 5269-5273 1990 4 367-373 SYNTAX 1993 1991 45 2 2 271-279 1997 7-11 1999 94 375-378 1992 42 370-377 1990 315-322 1991 18 6531-6535 WORLD HEALTH ORGANIZARON 1991 811 811 WORLD HEALTH ORGANIZATION 1997 72 1-5 1951 15 323-335