Figures and Tables: Figures should be professional in appearance and have clean, crisp lines. They should be no larger that 8 by 10 in, but keep in mind that they might have to be reduced to fit the journal’s format. Hand drawing and hand lettering are not acceptable. Use black and white or gray shading only, no color. Photographic images should be submitted as separate files via Mansucript Central and must be either JPEG or TIFF format at a resolution of 300 dots per inch (dpi). Authors are urged to submit illustrations rather than tables. When tabular material is necessary, it should not duplicate the text.