"Notwithstanding involvement on the part of Catholic and Protestant clergy and others, physicians were the leading force in the campaign to criminalize abortion in the USA. The American Medical Association (AMA), founded in 1847, argued that abortion was both immoral and dangerous, given the incompetence of many practitioners at that time. According to a number of scholars, the AMA’s drive against abortion formed part of a larger and ultimately successful strategy that sought to put “regular” or university-trained physicians in a position of professional dominance over the wide range of “irregular” clinicians who practiced freely during the first half of the 19th century. What followed was a “century of criminalization” characterized by a widespread culture of illegal abortion provision. Thousands of women died or sustained serious injuries at the hands of the infamous “back alley butchers” of that period, and encountering these victims in hospital emergency rooms became a nearly universal experience for US medical residents. However, safe abortions were available to some women, performed by highly skilled laypersons and physicians with successful mainstream practices who were motivated primarily by the desperate situations of their patients. These “physicians of conscience” were instrumental in convincing their medical colleagues of the necessity to decriminalize abortion. By 1970, the AMA reversed its earlier stance and called for the legalization of abortion."