1.
Rev. méd. Panamá
;
7(2): 125-36, 1982.
Article
in Spanish
| LILACS
| ID: lil-9708
2.
Rev. méd. Caja Seguro Soc
;
13(1): 117-33, 1981.
Article
in Spanish
| LILACS
| ID: lil-4232
3.
Rev. méd. Caja Seguro Soc
;
13(1): 134-44, 1981.
Article
in Spanish
| LILACS
| ID: lil-4233