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Nudelklone t1_itug5cu wrote on October 26, 2022 at 12:08 PM

Reply to comment by itsybitsybiter in Can someone explain the ethics of testing potentially life saving medication? by beatleboy07

A good example for those crossover design are the Covid vaccines. A friend of mine took place in the test of the vaccine. She was on the control group and was offered the vaccine after the end of the trial.