Final answer:
Jewish doctors at the Jewish Chronic Disease Hospital objected to Southam's cancer study due to ethical concerns relating to informed consent, nonmaleficence, and the potential for exploitation of vulnerable populations.
Step-by-step explanation:
The Jewish doctors at the Jewish Chronic Disease Hospital objected to Southam's cancer study due to ethical concerns. They believed that the study involved unethical practices similar to those found in previous controversial medical research, such as the Tuskegee syphilis study. In that historical case, African American men who had syphilis were misled and were neither informed about their disease nor provided with adequate treatment, even when a cure was available. This highlighted a pattern of medical research where participants were not treated with dignity and were exposed to harm. Concerns about informed consent, the nonmaleficence principle (not causing harm), and the exploitation of vulnerable populations were likely at the core of the Jewish doctors' opposition to Southam's study.