0188-6649 0188-6649 S0188-66492022000300261 10.21555/top.v640.2539 El Salvador 00 12 2022 00 12 2022 64 261 277

1988 2000 1946 1 3/4 3/4 218-24 1962 1942 1946 2013 5 10 10 37-53 2015 2009 31 4/5 4/5 591-614 1996 7-10