Journal of Osaka Society of Maternal Health

[title in Japanese] Asuka Ooki, Ayaka Seino, Noriko Haza, Tomomi Tsuji, Hideo Kurosu
[title in Japanese] Shoko Okamoto, Sayaka Goto, Rina Shirai, Marino Takeshita, Azuki Tanno, Mayu Toichi, Hisami Yashiki
[title in Japanese] Yui Tsuchida, Shiori Kurata, Yukina Saruya, Naoko Utagawa, Eriko Ota, Junko Nishino, Nobuaki Mitsuda, Mika Takei
[title in Japanese] [in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japanese]