Abstract
Takahashi, H; Takizawa, T; Matsubara, S
Takahashi, H (reprint author), Jichi Med Univ, Dept Obstet & Gynecol, 3311-1 Yakushiji, Shimotsuke, Tochigi 3290498, Japan.
JOURNAL OF MATERNAL-FETAL & NEONATAL MEDICINE, 2017; 30 (9): 1087