Yamada, Maoka
Tanaka, Keiko
Arakawa, Masashi
Miyake, Yoshihiro
Article History
Received: 6 January 2021
Revised: 1 June 2021
Accepted: 30 July 2021
First Online: 31 August 2021
Competing interests
: The authors declare no competing interests.
: Mothers gave their written informed consent to participate in the Kyushu Okinawa Maternal and Child Health Study.