1.
Rev. obstet. ginecol. Venezuela
;
66(2): 81-89, jun. 2006.
Article
in Spanish
| LILACS
| ID: lil-466085
2.
Rev. obstet. ginecol. Venezuela
;
65(4): 183-192, dic. 2005.
Article
in Spanish
| LILACS
| ID: lil-428248