DEERFIELD, Ill., 2017-Dec-28 — /EPR Retail News/ — Walgreens Boots Alliance, Inc. (Nasdaq: WBA) today (December 22, 2017) announces that it has entered into an agreement to reduce its stake in Guangzhou Pharmaceuticals Corporation, a pharmaceutical wholesaling joint venture in China, following an offer from its joint venture partner Guangzhou Baiyunshan Pharmaceutical Holdings Co. Ltd. Subject…