0123-3475 0123-3475 S0123-34752019000100144 10.15446/rev.colomb.biote.v21n1.70294 Colombia 00 06 2019 00 06 2019 21 1 144 152

2008 14-20 2008 57 220 220 545-7 1989 556-8 2002 40 1 1 108-16 2001 Lincoln, USA Digi International, Inc 2009 1980 1 5 5 313-37 2013 95 4 4 828-36 2006 Third 2000 11 81-92 2006 84 1567-76 2010 21 2 2 268-79 2015 37 3 3 2004-14 2017 123 173-81 2007 23 2 2 2013 37 1 1 2012-20 2015 2011 51 240-9 2015