Requiring the commissioner of human services under the medical assistance (MA) prepayment demonstration project and in consultation with prepaid health plans to develop quality standards for the provision of preventive health services for children and a financial withholding system to reimburse prepaid health plans under a settleup process based on adherence to the standards, prescribing a formula for the amount to be withheld from capitation rates and requiring commissioner implementation of the withholding and settleup process by a certain date(ra)