1.
Acta méd. costarric
;
45(supl.1): 42-48, mar. 2003. ilus
Article
in Spanish
| LILACS
| ID: lil-403877
2.
Acta pediátr. costarric
;
11(1): 34-9, 1997. ilus
Article
in Spanish
| LILACS
| ID: lil-278763