By pure chance, all six of the six reported cases would be women 1.6% of the time (and all six would be the same sex 3.1% of the time). So, a sex connection seems pretty likely.
According to what I read, oral contraceptives have been ruled out as a contributing factor.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.