Chu A, Khan AM, Tu JV. The potential use of big data in cardiovascular research. Univ Tor Med J. 2017 Jul 10;94(3):25-6.
Johannes CB, Crawford SL, Longcope C, McKinley SM. Bleeding patterns and changes in the perimenopause: a longitudinal characterization of menstrual cycles. Clin Consultations Obstetr Gynecol. 1996;8:9-20.