Subject index 

Kate and her husband took part in a trial comparing injections of grass pollen antigen against a placebo as a way to reduce hay fever. Kate was in the experimental group and her husband in the placebo group.
Caroline’s first baby was born by emergency caesarean. In her next pregnancy she took part in a trial comparing different types of information and decision aids about birth choices for women after a previous caesarean. She chose to attempt a natural birth.
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