2301-1254 2301-1254 S2301-12542019000200080 10.25184/anfamed2019v6n2a7 Colombia Colombia Colombia Colombia Colombia 00 12 2019 00 12 2019 6 2 80 84

1 2011 2 G 2013 33 633-52 3 I 2006 25 5 5 329-48