Choi, S. H., Park, Y. S., Shim, K. S., Choi, Y. S., Chang, J. Y., Hahn, W. H., & Bae, C. (2010). Recent Trends in the Incidence of Multiple Births and Its Consequences on Perinatal Problems in Korea. The Korean Academy of Medical Sciences.

Choi, Sun Hee, Young Sil Park, Kye Shik Shim, Yong Sung Choi, Ji Young Chang, Won Ho Hahn, and Chong-Woo Bae. Recent Trends in the Incidence of Multiple Births and Its Consequences On Perinatal Problems in Korea. The Korean Academy of Medical Sciences, 2010.

Choi, Sun Hee, et al. Recent Trends in the Incidence of Multiple Births and Its Consequences On Perinatal Problems in Korea. The Korean Academy of Medical Sciences, 2010.