Re: Plasma sex steroid hormone levels and risk of breast cancer in postmenopausal women.

MLA

Dorgan, J. F., et al. “Re: Plasma Sex Steroid Hormone Levels and Risk of Breast Cancer in Postmenopausal Women.” JNCI: Journal of the National Cancer Institute, vol. 91, no. 4, Feb. 1999, pp. 380–81. EBSCOhost, https://doi.org/10.1093/jnci/91.4.380.

APA

Dorgan, J. F., Longcope, C., Stanczyk, F. Z., Stephenson, H. E., Jr, & Hoover, R. N. (1999). Re: Plasma sex steroid hormone levels and risk of breast cancer in postmenopausal women. JNCI: Journal of the National Cancer Institute, 91(4), 380–381. https://doi.org/10.1093/jnci/91.4.380

Chicago

Dorgan, J F, C Longcope, F Z Stanczyk, H E Stephenson Jr, and R N Hoover. 1999. “Re: Plasma Sex Steroid Hormone Levels and Risk of Breast Cancer in Postmenopausal Women.” JNCI: Journal of the National Cancer Institute 91 (4): 380–81. doi:10.1093/jnci/91.4.380.