The online version of the article, “Contraception Choices in Women with Underlying Medical Conditions,” (September 15, 2010, page 621) has been updated to clarify that it reviews hormonal contraceptives only. In addition, the contraceptive norethindrone (Micronor) has been added to Table 1, and the following sentence, which begins on page 622, has been changed to the following: “Although women of reproductive age with comorbidities may prefer, or be more appropriate for, nonpharmacologic family planning options, such as fertility awareness-based methods or barrier contraceptives, this article focuses on the prescription of hormonal contraceptives.”