Pharmaceutical industries

Order Description introduce( HIV/aids drugs ) background history of these companies of "Gsk" and "Merck and co" and "wydeth leaderless" ... you can use this for the companies as a reference please: https://www.merck.co.uk/en/index.html (merck and co ) https://en.wikipedia.org/wiki/Wyeth (wydeth and co ) https://www.gsk.com (gsk ) make sure that the references are HARVARD style ..