1885-5210 1885-5210 S1885-52102024000200004 10.14201/rmc.15415 Ecuador 00 06 2024 00 06 2024 20 2 159 166

1. 2009 50 5 5 e181-184 2. 2012 80 1 1 17-9 3. 2003 66 4 4 212-7 4. 2021 7 2 2 118-37 5. 1989 9 1 1 41-8 6. 2005 13 4 4 475-85 7. 2007 47 3 3 136-8