In WI and in most states the public policy is that we as a society want patients, not doctors that have a financial interest in medical care, to make decisions about what care to receive.
Written consent is required so that a patient contemplating treatment is informed of the possible risks and/or complications attendant with procedure so that they can make an informed decision about their treatment. Years ago, operations, sometimes experimental in nature, as well as medical research was conducted on people without their knowledge of side effects, complications, ect. Informed consent is the mechanism by which a patient knows what the risks are and gives concent to them.
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