The invention relates to a folded medical cover for use in operation rooms, especially for instrument tables or operation tables or for the extremities of a patient. The processing time of a coacervation style process can be reduced and the yield can be substantially increased both by control of the precipitation step which allows for desolvation step to be dispensed with leading to significant process time reduction. Thus, the width of the upper surface of the part of the filler located on the non-opening part having a large height is reduced. The rotary contact and the light source are electrically connected through a power supply cord and electric power is supplied to the fixed contact. Data from the microarrays are designated as outliers based upon the tested significance.