 Additional 5 cc of blood will be taken at routine blood draws done twice in the first month then every 6 months for 5 years. The total blood volume withdrawn from each subject in both study groups is 60 cc. Blood will be spinned down, then serum will be banked in -80 Celsius freezer. These banked serum will be used in future research work aiming to assess activity of inflammatory and fibrotic markers such as tumor necrosis factor alpha, interleukin 6, leptin, and adiponectin. 