No. Consent is not necessary, so we follow the child.
We know that children and parents are often on the same page, but not always. Conflicts have been described frequently. Very importantly, the doctor will only go ahead in providing what is asked if he or she is convinced that this is in line with what is the real and genuine opinion of the child.
If there is any doubt on the side of the doctor, whether he or she is listening to the child or the parents' opinion, he or she will not go ahead and provide it. There needs to be a firm conviction on the side of the doctor.