A method for generating parity codes of a data sector having data information and main data. The supporting member is adjacent to a gap between a signal line and the substrate and has a predetermined height with respect to the substrate. Additionally, first and second spacer arms may extend from the frame. The shifted data signals are addedsubtracted from the base value to approximate a sinusoidal amplitude for the phase angle. The invention also includes a method to decrease the toxicity to an antineoplastic agent or increase the therapeutic index of an antineoplastic agent administered for the treatment of a solid growth of abnormally proliferating cells, comprising administering an antioxidant prior to, with, or following the antineoplastic treatment. The structure includes coaxial gears provided on a shaft, each of the coaxial gears is provided with toothed portions at a periphery thereof at suitable positions, with a smooth portion between adjacent toothed portions.