0001-6002 0001-6002 S0001-60022018000100042 Costa Rica 00 03 2018 00 03 2018 60 1 42 44

1. 2015 48 6-12 2. 2015 96 39-40 3. 2014 21 322-7 4. 1969 87 63-70 5. 2014 64 61-5 6. 2006 16 293-6