"Conservative Calvinist publishers are producing books not only against [abortifacient and other forms of] contraception but promoting Natural Family Planning. A movement of Missouri Synod Lutherans is working to overturn their church’s current teaching and return it to Luther’s, and observers report a new interest in the traditional teaching among conservative movements in the mainline churches." -Allan Carlson, member of the Evangelical Lutheran Church in America, "Children of the Reformation: A Short & Surprising History of Protestantism & Contraception," May 2007