Hemispherx Biopharma Announces Plans to File for Regulatory Approval of Ampligen(R) to Treat Chronic Fatigue Syndrome (CFS) in Three Additional Latin America Countries PHILADELPHIA, March 10, 2014 (GLOBE NEWSWIRE) -- Hemispherx Biopharma, Inc. (NYSE MKT:HEB) (the "Company" or "Hemispherx"), announced that it and its partner in Latin America, GP Pharm, are planning...