AMIH Subsidiary, ZipDoctor, Inc., Executes Marketing Agreement with Captify Consulting to Champion ZipDoctor’s Digital Marketing and Social Media Advertising Efforts Addison, TX, Sept. 14, 2020 (GLOBE NEWSWIRE) -- American International Holdings Corp. (OTC Pink:AMIH), through its recently formed subsidiary, ZipDoctor, Inc. (“ZipDoctor”), is proud to announce...