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Review Article
The changing trends in live birth statistics in Korea, 1970 to 2010
Jae Woo Lim
Clin Exp Pediatr. 2011;54(11):429-435.   Published online November 30, 2011

Although Korean population has been growing steadily during the past four decades, the nation is rapidly becoming an aging society because of its declining birth rate combined with an increasing life expectancy. In addition, Korea has one of the lowest fertility rates in the world due to fewer married couples, advanced maternal age, and falling birth rate. The prevalence of...

Original Article
Multiple births conceived by assisted reproductive technology in Korea
Young Sil Park, Sun Hee Choi, Kye Shik Shim, Ji Young Chang, Won Ho Hahn, Yong Sung Choi, Chong-Woo Bae
Clin Exp Pediatr. 2010;53(10):880-885.   Published online October 31, 2010
Purpose

The recent trends of multiple births (MBs) conceived by assisted reproductive technology (ART) in Korea were analyzed as well as the relationship with maternal age, especially advanced maternal age.

Methods

Data were obtained from the Korean Statistical Information Service and annual ART reports from the ART committee of the Korean Society of Obstetrics and Gynecology.

Results

MBs increased from the early 1990s; there was...

A clinical study on twin.
Ho Joon Im, Sang Yoon Ahn, In Joon Seol, Soo Jee Moon, Hahng Lee
Clin Exp Pediatr. 1991;34(5):621-628.   Published online May 31, 1991
Among the total of 17,991 newborns delivered at Hanyang University Howpital from January 1980 to December 1989, a clinical study was performed on 277 twin pregnancies. The results of the study were as follows: 1) The incidence of twins was 1:64.9. 2) The average male-female sex ratio of twins was 1:1.1, total same sex pairs rate was 79.4% (male-male & female-female) and different sex rate was 20.6%. 3) The...
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