Abbott Laboratories is an Illinois corporation, incorporated in 1900. Abbott's principal business is the discovery, development, manufacture, sale and diversified line of health care products. The Company has four reportable revenue segments: Pharmaceutical Products, Diagnostic Products, Ross Products, and International. The Company ... has a 50 percent owned joint venture, TAP Pharmaceutical Products Inc. The Pharmaceutical Products segment's products include adult and pediatric pharmaceuticals, which are sold primarily on the prescription, or recommendation, of physicians. The Pharmaceutical Products segment markets its products in the United States and generally sells its products directly to wholesalers, government agencies, health care facilities, and independent retailers from Abbott-owned distribution centers and public warehouses. This segment directs its primary marketing efforts toward securing the prescription of Abbott's brand of products by physicians.