2444-054X 2444-054X S2444-054X2019000600624 10.24875/ciru.18000771 Chile Chile Chile Chile Chile Chile 00 12 2019 00 12 2019 87 6 624 629

1 2015 6 e23-33 2 2007 31 2067-9 3 2003 78 783-8 4 1997 156 535-8 5 2004 170 1678-86 6 2013 91 177-83 7 2003 6 149-52 8 2008 143 539-44 9 2008 30 212-6 10 2013 43 271-5 11 1997 84 273-8 12 1994 28 471-82 13 2003 327 1032-7 14 2006 355 2664-9 15 2015 67 480-5 16 2015 72 648-53 17 2015 72 606-17 18 2018 75 458-64 19 2015 72 625-35 20 2018 46 337-55