The menace of unbridled science
In 1948, the World Medical Council (WMC) had an ethos enshrined in the Hippocratic Oath which had guided medical practice for the preceding 2,400 years.
The unborn were thus specifically included in the WMC Geneva Medical Convention and likewise in the UN Declaration of the Rights of the Child; while abortionists were still regarded as criminals in most UN member states (excepting the Soviet bloc).