1. Kasumi F: BILATERAL BREAST CANCER.J Jpn Surg Soc 86: 266–279, 1985 (in Japanese with English abstract).
2. WHO: Histological typing of breast tumours. International histological classification of tumours. 2nd ed, World Health Organization, Geneva, 1981.
3. The questionnaire survey of fifty-fourth Japanese society of breast cancer.J Jpn Soc Clin Oncol Soc 27: 99- 109, 1992.
4. Muto N, Sakamoto G, Akiyama F, Morizono H, Yoshimoto M, Utada T, Fujiuchi N, Kasumi F: Heterochronous Bilateral Multicentric Cancers of the Breast.Jpn J Breast Cancer 4: 524–527, 1999 (in Japanese with English abstract).
5. Dawson PJ, Maloney T, Gimotty P, Juneau P, Ownby H, Wolman SR: Bilateral breast cancer: one disease or two.Br Cancer Res Treat 19: 233–244, 1991.