No licensed health care provider, as defined in Section 38-79-410, who renders medical services voluntarily and without compensation or the expectation or promise of compensation is liable for any civil damage for any act or omission resulting from the rendering of the services unless the act or omission was the result of the licensed health care provider's gross negligence or wilful misconduct. The agreement to provide a voluntary noncompensated service must be made before the rendering of the service by the licensed health care provider.