0001-6002 0001-6002 S0001-60022016000300115 Costa Rica 00 09 2016 00 09 2016 58 3 115 121

1 2001 1 49-66 2 2001 1 67-87 3 1968 37 709-28 4 1985 19 40-4 5 1987 79 1-25 6 2009 New edition 7 2001 32 243-53 8 2008 89 642-52 9 2004 85 1801-13 10 2005 365 63-78 11 2004 32 1928-48 12 2008 34 17-60 13 2009 37 666-88 14 1981 114 632-48 15 2001 51 173-7 16 1976 28 86-90 17 2003 104 17-24 18 1965 209 1095-105 19 1994 265-70 20 1996 3 607-41 21 World Health Organization 1997 2nd 22 2008 53 287-99 23 2008 52 433-51 24 2008 91 24-30 25 2000 278 L294-304 26 2001 280 L1138-47 27 2002 90 1307-15 28 2001 88 1228-30