aDepartment of Obstetrics and Gynecology, CHA Hospital, CHA University, Korea
bDepartment of Biomedical Science, CHA University, Korea
cDigital Genomics Inc., Seoul, Korea
dDivision of Prenatal Medicine, Department of Human Embryology, University of Bologna, Bologna, Italy
eDepartment of Obstetrics and Gynecology, Pusan Baik Hospital, Inje University, Busan, Korea
1Jin Hee Kang and Haengseok Song contributed equally to the writing of this article.
Received 6 April, 2010
Revised 13 December, 2010
Accepted 14 January, 2011
Correspondence to Dong Hyun Cha, MD, Department of Obstetrics and Gynecology, CHA hospital, CHA University, 650-9 Yeok sam-1 dong, Kangnam-gu, Seoul 135-081, Korea Tel: +82 2 3468 3123; fax: +82 2 558 1119; e-mail: [email protected]