2550-6722 2550-6722 S2550-67222021000200084 10.37135/chk.002.14.06 Peru 00 08 2021 00 08 2021 14 84 94

1987 2009 2004 1976 197-208 2008 1973 2015 2011 36 223 223 38-49 2019 2008 2011 52 52 52 91-122 2004 29-52 2004 2005 2011 1996 2014 31-71