Fathers and mothers who wish to voluntarily establish paternity for their child or rescind a previously executed Acknowledgment of Paternity or Denial of Paternity may do so through any local child support office of the Office of the Attorney General, Child Support Division; the Texas Department of State Health Services, Vital Statistics Unit; a local birthing hospital or birthing center; or any entity certified by the Office of the Attorney General to provide such services. The Acknowledgment of Paternity must be executed according to the rules contained herein and under the Texas Family Code, Chapter 160, Subchapter D, Voluntary Acknowledgment of Paternity. Entities that are required by law to provide paternity establishment services and entities that voluntarily elect to provide paternity establishment services must abide by the rules of this subchapter.