1.
Korean Journal of Obstetrics and Gynecology
;
: 1302-1312, 1991.
Article
in Korean
| WPRIM
| ID: wpr-219953
2.
Korean Journal of Obstetrics and Gynecology
;
: 1481-1487, 1991.
Article
in Korean
| WPRIM
| ID: wpr-64527