LITTLETON, Colo.--(BUSINESS WIRE)--April 10, 2006--Zynex Medical Holdings, Inc. (OTCBB: ZYNX - News), a provider of pain management systems and electrotherapy products for medical patients with functional disability, today announced that its Zynex Medical, Inc., subsidiary has signed a contract with healthcare provider Aetna, Inc. (NYSE: AET - News), to become a provider for the Aetna Workers Compensation Access (AWCA) program.
