0185-3325 0185-3325 S0185-33252016000500243 10.17711/SM.0185-3325.2016.028 México Canada 00 10 2016 00 10 2016 39 5 243 248

2012 47 7 7 1099-109 National Research Council (US) Institute of Medicine (US) 2009 WHO 2005 18 4-5 4-5 229-40 1994 33 6 6 809-18 1990 47 5 5 487-96 2009 32 2 2 155-63 2012 138 1-2 1-2 165-9 2004 46 5 5 417-24 2013 55 1 1 74-80 5 BELLA study group 2008 17 ^s1 ^s1 1 71-81 2004 40 2 2 169-77 2009 37 5 5 637-52 2002 5 1 1 57-83 1985 24 3 3 298-302 1982 23 4 4 437-57 2002 4 4 4 257-66 2005 131 4 4 483-509 2008 38 1 1 60-73 2013 42 1 1 68-77 2005 131 3 3 361-82 2015 174 447-63 2014 24 8 8 2352-63 1997 38 5 5 581-6 2000 177 534-9 2010 13 02 02 990-9 2013 13 1 1 95 2004 66 3 3 411-21 R Core Team 2016 2000 161 4 4 479-92 2015 7 1 1 91-104 2015 24 2 2 353-70 2015 105 5 5 986-93 2008 20 2 2 139-49 2011 128 6 6 1126-34 2015 45 12 12 2583-94