Secular trends in age at menarche and time to establish regular menstrual cycling in Japanese women born between 1930 and 1985

• Main Authors: Hosokawa Michie (Author), Imazeki Setsuko (Author), Mizunuma Hideki (Author), Kubota Toshiro (Author), Hayashi Kunihiko (Author)
• Format: Book
• Published: BMC, 2012-07-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

<p>Abstract</p> <p>Background</p> <p>Early life-stage exposure to estrogen increases the risk of breast cancer. The objective of this study was to investigate the age at menarche and time to onset of regular menstrual cycles for Japanese women born between 1930 and 1985...