2448-8771 2448-8771 S2448-87712018000100009 México México México 00 04 2018 00 04 2018 30 1 9 17

1 2005 60 7 7 636-53 2 2003 13 4 4 260-6 3 2007 92 430-4 4 The American College of Obstetricians and Gynecologists.Washington.DCU 2006 108 1319-22 5 1983 287 943-5 6 1999 2nd 43 7 1999 2nd 43 8 1999 2nd 43 9 2013 119 3 3 507-15 10 2012 10 10 10 CD004350 11 2008 63 1319-26 12 1991 67 678-81 13 1979 50 524 14 1983 147 13 15 1985 153 870 16 1995 80 709-71 17 2012 2 2 10-2 18 1987 67 782-6 19 1988 32 7 7 559-65 20 2012 2 2 10-2 21 1995 80 709-12 22 15 3 3 137-41 23 2014 82 3 3 170-6 24 2010 13c14710 25 2016 215 4 4 486 26 2012 119 7 7 824-31 27 2012 114 2 2 377-90 28 2002 94 4 4 920-6 29 2007 92 430-4 30 The American College of Obstetricians and Gynecologists.Washington.DC U 2006 108 1319-22 31 1995 1 79-83