Whenever authorization is sought for the administration to a child of electroconvulsive or other convulsive therapy, the court shall appoint an independent psychiatrist who shall receive reimbursement in an amount fixed by the court. No electroconvulsive or other convulsive therapy may be authorized for a child except upon the testimony of an independent psychiatrist, who is child and adolescent certified by the American Board of Psychiatry and Neurology, that the psychiatrist has examined the child and is of the opinion that the therapy is necessary for the child's health or safety.