1.
Korean Journal of Obstetrics and Gynecology
;
: 1744-1752, 1993.
Article
in Korean
| WPRIM
| ID: wpr-31893
2.
Korean Journal of Obstetrics and Gynecology
;
: 1188-1194, 1991.
Article
in Korean
| WPRIM
| ID: wpr-102143