1.
Rev. Fac. Cienc. Méd. Univ. Cuenca
;
16(1): 79-89, 1984.
Article
in Spanish
| LILACS
| ID: lil-21876
2.
Rev. Fac. Cienc. Méd. Univ. Cuenca
;
16(1): 93-100, 1984.
Article
in Spanish
| LILACS
| ID: lil-21877