0124-0064 0124-0064 S0124-00642018000200243 10.15446/rsap.v20n2.59067 Colombia Colombia Colombia 00 04 2018 00 04 2018 20 2 243 244

1 2001 49 12 12 980-1001 2 2001 40 7 7 762-72 3 2015 351 h4320 4 2011 30 5 5 461-8 5 2012 11 Cd004851