Misspelled Author Surname. In the article titled “Estrogen Plus Progestin and Breast Cancer Detection by Means of Mammography and Breast Biopsy,” published in the February 25th issue of the Archives (2008;168[4]:370-377) the sixth author's surname was misspelled. It should have read: Mary Ann Gilligan, MD, MPH, in the byline on page 370, the “Author Affiliations” section on page 375, right-hand column, and the “Analysis and interpretation of data” and “Critical revision of the manuscript for important intellectual content” subsections of the “Authors Contributions” section on page 375, right-hand column.