A forming die apparatus includes a first die on which a die surface is formed and a second die for pressing a workpiece placed on the first die. The invention also relates to the use of EPC osteopontin levels as a marker of the risk of the development of these cardiovascular complications. A rotatable shaft, a rotatable plate and a rocker arm mount the impeller to a support structure so that the impeller is rotatable, and convert the rotating motion of the impeller into linear motion.