prolonged estrogen exposure to the endometrium because they 're a combination of estrogen and progestinpreventprolonged estrogen exposure to the endometrium because they 're a combination of estrogen and progestin
your blood pressure to rise , which can be dangerouscan causeyour blood pressure to rise , which can be dangerous
ovulationpreventovulation
between 2000 and 2011(passive) were caused bybetween 2000 and 2011