Subscription cancellations are not accepted after the first issue has been mailed. For credit card payments, please supply the card number, name as imprinted, expiration date, and an authorized signature. Frederick L Kiechle Lily H Wu Instructions to Authors Manuscript Submission Submission of the text as electronic files is important, since most manuscripts are reviewed and edited in electronic form. Electronic files facilitate the distribution of manuscripts to reviewers, minimize transcriptional errors, and speed the production of camera-ready copy. Figures Charts and line drawings should be submitted as graphic files, using Excel, DeltaGraph, SigmaPlot, or KaleidoGraph, or as TIFF files using Adobe PageMaker or PhotoShop.
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Digital images are preferred to photographs. Color photographs may be used, but are published only at the authors' expense. Cover Letter A cover letter is required for all manuscripts. When the manuscript is submitted by fax or e-mail, the original copy of the cover letter, signed by all authors, should be sent to the Editor by regular mail. The authors undersigned certify that each author participated sufficiently in the study conception or design, data analysis or interpretation, and drafting or revision of the manuscript, so that each author can take responsibility for the validity and objectivity of the entire study.