1.
Arch. invest. méd
;
21(3): 263-7, jul.-sept. 1990. ilus, tab
Article
in Spanish
| LILACS
| ID: lil-177294
2.
Arch. invest. méd
;
21(3): 273-7, jul.-sept. 1990. tab
Article
in Spanish
| LILACS
| ID: lil-177296