0187-5779 0187-5779 S0187-57792012000200157 Mexico Mexico Mexico Mexico Mexico 00 06 2012 00 06 2012 30 2 157 164

2003 14 117-21 2003 17-22 august 2003 Mexico City, Mexico 238-9 2004 11 13-20 2008 92-93 118-25 2009 20 211-6 2010 26 1-7 2004 2007 2005 28 127-33 2007 2005 2007 33 175-80 2010 1 273-87 2010 33 107-10