DALLAS--(BUSINESS WIRE)--Millions of Texans will continue to benefit from telehealth, the increasingly popular health care delivery method, after a federal court today blocked a recent action by the Texas Medical Board. Issuing his injunction, Judge Robert Pitman, U.S. District Court for the Western District of Texas, indicated that Teladoc is likely to succeed in showing that the revisions to Rule 190.8 adopted in April by the Texas Medical Board illegally limit competition by requiring a face