Cimarex was formed in February 2002 as a wholly owned subsidiary of Tulsa-based Helmerich & Payne, Inc. On September 30, 2002, Cimarex was completely spun off to Helmerich and Payne shareholders and simultaneously merged with Denver-based Key Production Company, Inc.
A few others such as rheumatoid arthritis and autoimmune diseases of the thyroid gland are most commonly seen in older individuals. However, many of the autoimmune diseases such as lupus and multiple sclerosis are most common in women during the ages of twenty to forty.
The following are some of the more common autoimmune diseases: 1  rheumatoid arthritis: inflammation of joints and surrounding tissues. 2  systemic lupus erythematosus: affects skin, joints, kidneys, brain, and other organs.he following are some of the more common autoimmune diseases: 1  rheumatoid arthritis: inflammation of joints and surrounding tissues. 2  systemic lupus erythematosus: affects skin, joints, kidneys, brain, and other organs.