Effect of sex and menstrual cycle phase on cytochrome P450 2C19 activity with omeprazole used as a biomarker.
Kim MJ, Bertino JS, Gaedigk A, Zhang Y, Sellers EM, Nafziger AN. Effect of sex and menstrual cycle phase on cytochrome P450 2C19 activity with omeprazole used as a biomarker. Clin Pharmacol Ther. 2002 Aug; 72(2):192-9.