Elto Pharma Receives Notice of Allowance in Canada for Patent Covering Use of Eltoprazine to Treat non-ADHD Cognitive Impairment NEW YORK, May 01, 2018 (GLOBE NEWSWIRE) -- Via OTC PR Wire -- Elto Pharma, Inc., a specialty pharmaceutical, clinical-stage wholly-owned subsidiary of Amarantus Bioscience Holdings, Inc....