1.
Rev. obstet. ginecol. Venezuela
;
65(2): 89-97, jun. 2005.
Article
in Spanish
| LILACS
| ID: lil-419087
2.
Rev. obstet. ginecol. Venezuela
;
64(2): 101-113, jun. 2004. tab
Article
in Spanish
| LILACS
| ID: lil-394683