A method for recovering data in a storage device is provided in which information related to a first data structure is defined with a plurality of copies of a second data structure and the information related to the first data structure is rebuilt using the plurality of copies of the second data structure upon corruption thereof. In the method, the key caps are separated from a solid piece by laser cutting, the piece being simultaneously attached to said base in such a way that the pieces to be separated from the piece, of which each represents one of said key caps, remain attached to said base even after the cutting. Each tube has a proximal end adjacent the main cover portion and a distal end relative to the proximal end, with a first aperture defined in the main cover portion at the proximal end of the tube and a second aperture defined at the distal end of the tube. Accordingly, the driver request is rejected. The compositions, kits and methods provide an effective amount of granulocyte colony stimulating factor to prevent, for example, spontaneous abortion, preeclampsia, preterm labor or implantation failure of an embryo. The error portion affects the analysis of the observed image later.