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In page Nazi human experimentation:

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Intravenous injections of solutions speculated to contain iodine and silver nitrate were similarly successful but had unwanted side effects such as vaginal bleeding, severe abdominal pain, and cervical cancer. Those who developed cancer were vivisected, with their cervixes and wombs removed.[7] Therefore, radiation treatment became the favored choice of sterilization. Specific amounts of exposure to radiation destroyed a person's ability to produce ova or sperm, sometimes administered through deception. Many suffered severe radiation burns.[citation needed]